VS2010:error C3083: 'Windows': the symbol to the left of a '::' must be a type

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原创 最新推荐文章于 2024-09-21 17:17:01 发布 · 置顶 · 4k 阅读 · 0 ·
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#windows #2010 #c #forms #properties #application

本文介绍了解决VisualStudio2010中MFC工程项目出现的errorC3083编译错误的方法。通过正确配置.NET Framework引用，可以消除错误并使工程正常编译。

在使用Visual Studio2010创建MFC工程后出现的编译错误：error C3083: 'Windows': the symbol to the left of a '::' must be a type，定位这个错误在这条语句上：System::Windows::Forms::Application::SetUnhandledExceptionMode(System::Windows::Forms::UnhandledExceptionMode::ThrowException);
可以通过以下步骤解决：右键单击Solution Explorer中的工程 --->
选择References --->
打开“Propery Pages”页，在左边栏选择Common Properties的Framework andReferences项 --->
在中间栏的下边点击“Add NewReferences ”按钮，弹出“Add References”对话框 --->
选择".NET"页 --->
选择“System.Windows.Forms 版本为 Version 4.0.0.0”项，请点击OK按钮确定 --->
返回到“Propery Pages”页，可以看到在“References”栏Name中新增了“System.Windows.Forms”项，点击“Propery Pages”页的确定按钮回到工程。 --->
重新编译工程看看。

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编译UWP应用时遇到了问题： 1>D:\workspace\foo_project\hello_uwp\hello_uwp\Generated Files\MainPage.g.h(13,52): warning C4467: usage of ATL attributes is deprecated (compiling source file MainPage.xaml.cpp) 1>D:\workspace\foo_project\hello_uwp\hello_uwp\Generated Files\MainPage.g.h(13,52): warning C4467: usage of ATL attributes is deprecated (compiling source file App.xaml.cpp) 1>D:\workspace\foo_project\hello_uwp\hello_uwp\Generated Files\MainPage.g.h(13,8): error C2039: 'Windows': is not a member of '`global namespace'' (compiling source file App.xaml.cpp) 1>D:\workspace\foo_project\hello_uwp\hello_uwp\Generated Files\MainPage.g.h(13,8): error C2039: 'Windows': is not a member of '`global namespace'' (compiling source file MainPage.xaml.cpp) 1>D:\workspace\foo_project\hello_uwp\hello_uwp\Generated Files\MainPage.g.h(13,17): error C2039: 'Foundation': is not a member of '`global namespace'' (compiling source file App.xaml.cpp) 1>D:\workspace\foo_project\hello_uwp\hello_uwp\Generated Files\MainPage.g.h(13,17): error C2039: 'Foundation': is not a member of '`global namespace'' (compiling source file MainPage.xaml.cpp) 1>D:\workspace\foo_project\hello_uwp\hello_uwp\Generated Files\MainPage.g.h(13,29): error C2039: 'Metadata': is not a member of '`global namespace'' (compiling source file MainPage.xaml.cpp) 1>D:\workspace\foo_project\hello_uwp\hello_uwp\Generated Files\MainPage.g.h(13,29): error C2039: 'Metadata': is not a member of '`global namespace'' (compiling source file App.xaml.cpp) 1>D:\workspace\foo_project\hello_uwp\hello_uwp\Generated Files\MainPage.g.h(13,8): error C3083: 'Windows': the symbol to the left of a '::' must be a type (compiling source file MainPage.xaml.cpp) 1>D:\workspace\foo_project\hello_uwp\hello_uwp\Generated Files\MainPage.g.h(13,8): error C3083: 'Windows': the symbol to the left of a '::' must be a type (compiling source file App.xaml.cpp) 1>D:\workspace\foo_project\hello_uwp\hello_uwp\Generated Files\MainPage.g.h(13,17): error C3083: 'Foundation': the symbol to the left of a '::' must be a type (compiling source file MainPage.xaml.cpp) 1>D:\workspace\foo_project\hello_uwp\hello_uwp\Generated Files\MainPage.g.h(13,17): error C3083: 'Foundation': the symbol to the left of a '::' must be a type (compiling source file App.xaml.cpp) 1>D:\workspace\foo_project\hello_uwp\hello_uwp\Generated Files\MainPage.g.h(13,29): error C3083: 'Metadata': the symbol to the left of a '::' must be a type (compiling source file MainPage.xaml.cpp) 1>D:\workspace\foo_project\hello_uwp\hello_uwp\Generated Files\MainPage.g.h(13,29): error C3083: 'Metadata': the symbol to the left of a '::' must be a type (compiling source file App.xaml.cpp) 1>D:\workspace\foo_project\hello_uwp\hello_uwp\Generated Files\MainPage.g.h(13,39): error C2337: 'WebHostHidden': attribute not found (compiling source file MainPage.xaml.cpp) 1>D:\workspace\foo_project\hello_uwp\hello_uwp\Generated Files\MainPage.g.h(13,39): error C2337: 'WebHostHidden': attribute not found (compiling source file App.xaml.cpp)
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从你提供的错误信息来看，编译器无法识别 `Windows::Foundation::Metadata` 命名空间，并且报告 `WebHostHidden` 属性找不到。这通常与 Windows SDK 或 C++/CX 编译设置配置不正确有关。以下是可能的原因和解决办法...
#include <iostream> #include <fstream> #include <iomanip> #include <vector> #include <string> #include <map> #include <stdexcept> #include <cctype> // 用于字符类型判断 using namespace std; // --------------------------- 全局变量定义 --------------------------- // 预测分析表（行：非终结符，列：终结符） vector<vector<string>> table(5, vector<string>(9, "")); // 文法产生式（索引对应非终结符顺序：E, A, T, B, F） vector<string> G; // 符号到索引的映射（非终结符和终结符统一编码） map<char, int> index; // 终结符集合（包含$作为结束符） const string terminal = "in+-*/()$"; // 非终结符集合（顺序与索引一致） const string nonTerminal = "EATBF"; // 各产生式右部的FIRST集（按G顺序） vector<string> First; // 非终结符的FOLLOW集（按非终结符顺序：E, A, T, B, F） vector<string> Follow; // --------------------------- 函数声明 --------------------------- int analysis(void); void buildTable(); // 构造分析表 // --------------------------- 主函数 --------------------------- int main() { // 初始化全局变量（VS不支持列表初始化，需逐个赋值） // 文法产生式 G.push_back("E->TA"); G.push_back("A->+TA"); G.push_back("A->-TA"); G.push_back("A->e"); G.push_back("T->FB"); G.push_back("B->*FB"); // 修正原代码中B->FB的错误，应为B->*FB G.push_back("B->/FB"); G.push_back("B->e"); G.push_back("F->i"); G.push_back("F->(E)"); G.push_back("F->n"); // 符号索引 index['E'] = 0; index['A'] = 1; index['T'] = 2; index['B'] = 3; index['F'] = 4; index['i'] = 0; index['n'] = 1; index['+'] = 2; index['-'] = 3; index['*'] = 4; index['/'] = 5; index['('] = 6; index[')'] = 7; index['$'] = 8; index['e'] = 9; // 空产生式用'e'表示 // FIRST集（按G的顺序，共11个产生式） First.push_back("i(n"); // E->TA First.push_back("+"); // A->+TA First.push_back("-"); // A->-TA First.push_back("e"); // A->e First.push_back("i(n"); // T->FB First.push_back("*"); // B->*FB First.push_back("/"); // B->/FB First.push_back("e"); // B->e First.push_back("i"); // F->i First.push_back("("); // F->(E) First.push_back("n"); // F->n // FOLLOW集（按非终结符顺序：E, A, T, B, F） Follow.push_back("$)"); // E的FOLLOW Follow.push_back("$)+-"); // A的FOLLOW Follow.push_back("$)+-*/"); // T的FOLLOW Follow.push_back("$)+-"); // B的FOLLOW Follow.push_back("*/+-$)"); // F的FOLLOW buildTable(); // 构造分析表 // 输出预测分析表 cout << "预测分析表：" << endl; // 输出终结符表头 for (size_t i = 0; i < terminal.size(); ++i) cout << '\t' << terminal[i]; cout << endl; // 输出非终结符及对应表项 for (size_t x = 0; x < nonTerminal.size(); ++x) { cout << nonTerminal[x]; for (size_t y = 0; y < table[x].size(); ++y) cout << '\t' << table[x][y]; cout << endl; } cout << endl; return analysis(); } // --------------------------- 构造分析表 --------------------------- void buildTable() { // 遍历每个产生式 for (size_t itG = 0; itG < G.size(); ++itG) { string prod = G[itG]; char lhs = prod[0]; // 左部非终结符 int x = index[lhs]; // 左部索引 string first = First[itG]; // 当前产生式的FIRST集 // 处理FIRST集中的非空元素 for (size_t i = 0; i < first.size(); ++i) { char sym = first[i]; if (sym != 'e') { // 非空产生式 int y = index[sym]; if (table[x][y].empty()) { table[x][y] = prod; } } else { // 空产生式，处理FOLLOW集 string fol = Follow[index[lhs]]; // 左部非终结符的FOLLOW集 for (size_t j = 0; j < fol.size(); ++j) { char folSym = fol[j]; int y = index[folSym]; if (table[x][y].empty()) { table[x][y] = prod; } } } } } // 写入同步信息（synch） for (size_t i = 0; i < nonTerminal.size(); ++i) { char nt = nonTerminal[i]; int x = index[nt]; string fol = Follow[i]; // Follow集按非终结符顺序存储 for (size_t j = 0; j < fol.size(); ++j) { char folSym = fol[j]; int y = index[folSym]; if (table[x][y].empty()) { table[x][y] = "synch"; } } } } // --------------------------- 分析过程 --------------------------- int analysis(void) { ifstream fin("fin.txt"); if (!fin.is_open()) { cout << "输入文件不存在 fin.txt." << endl; return 1; } ofstream fout("fout.txt"); if (!fout.is_open()) { cout << "无法打开输出文件 fout.txt." << endl; return 1; } string s; fin >> s; cout << "成功读取待分析串：" << endl << s << endl; int wid = s.length() + 1; s.push_back('$'); // 添加结束符 vector<char> analyStack; analyStack.push_back('$'); analyStack.push_back('E'); // 初始栈：$E char top, cur; auto ip = s.begin(); // 输出格式头 fout << left << setw(wid + 10) << "栈" << right << setw(wid) << "输入" << " " << "输出" << endl; do { string str1(analyStack.begin(), analyStack.end()); string str2(ip, s.end()); fout << left << setw(wid + 10) << str1 << right << setw(wid) << str2 << " "; top = analyStack.back(); cur = *ip; // 处理标识符和数字（转换为i/n） if (isalpha(cur)) cur = 'i'; else if (isdigit(cur)) cur = 'n'; // 栈顶是终结符或$ if (terminal.find(top) != string::npos || top == '$') { if (top == cur) { analyStack.pop_back(); ++ip; fout << endl; } else { fout << "出错！ 不匹配，弹出" << top << endl; analyStack.pop_back(); // 弹出不匹配的栈顶 } } // 栈顶是非终结符 else { try { int x = index[top]; int y = index[cur]; string production = table[x][y]; if (production.empty()) { fout << "出错！空白，跳过" << cur << endl; ++ip; } else if (production == "synch") { fout << "出错！synch，弹出" << top << endl; analyStack.pop_back(); } else { analyStack.pop_back(); // 弹出非终结符 string expr = production.substr(3); // 提取右部（如"TA"） if (expr == "e") expr = ""; // 空产生式处理 // 逆序压栈 for (int i = expr.size() - 1; i >= 0; --i) { analyStack.push_back(expr[i]); } fout << production << endl; } } catch (out_of_range) { fout << "输入字符非法！" << endl; break; } } } while (top != '$'); // 当栈顶为$时结束循环（此时栈应为["$"]） cout << endl << "分析结果已输出至 fout.txt." << endl; return 0; } 这段代码运行时报错：--------------------Configuration: zyg - Win32 Debug-------------------- Compiling... zyg.cpp C:\Users\JF02\Desktop\zyg.cpp(14) : error C2146: syntax error : missing ',' before identifier 'table' C:\Users\JF02\Desktop\zyg.cpp(14) : error C2065: 'table' : undeclared identifier C:\Users\JF02\Desktop\zyg.cpp(14) : error C2143: syntax error : missing '>' before ';' C:\Users\JF02\Desktop\zyg.cpp(17) : error C2872: 'vector' : ambiguous symbol C:\Users\JF02\Desktop\zyg.cpp(17) : error C2143: syntax error : missing ';' before '<' C:\Users\JF02\Desktop\zyg.cpp(17) : error C2143: syntax error : missing ';' before '<' C:\Users\JF02\Desktop\zyg.cpp(29) : error C2872: 'vector' : ambiguous symbol C:\Users\JF02\Desktop\zyg.cpp(29) : error C2143: syntax error : missing ';' before '<' C:\Users\JF02\Desktop\zyg.cpp(29) : error C2143: syntax error : missing ';' before '<' C:\Users\JF02\Desktop\zyg.cpp(32) : error C2872: 'vector' : ambiguous symbol C:\Users\JF02\Desktop\zyg.cpp(32) : error C2143: syntax error : missing ';' before '<' C:\Users\JF02\Desktop\zyg.cpp(32) : error C2143: syntax error : missing ';' before '<' C:\Users\JF02\Desktop\zyg.cpp(44) : error C2065: 'G' : undeclared identifier C:\Users\JF02\Desktop\zyg.cpp(44) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(45) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(46) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(47) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(48) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(49) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(50) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(51) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(52) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(53) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(54) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(74) : error C2065: 'First' : undeclared identifier C:\Users\JF02\Desktop\zyg.cpp(74) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(75) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(76) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(77) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(78) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(79) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(80) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(81) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(82) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(83) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(84) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(87) : error C2065: 'Follow' : undeclared identifier C:\Users\JF02\Desktop\zyg.cpp(87) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(88) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(89) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(90) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(91) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(105) : error C2109: subscript requires array or pointer type C:\Users\JF02\Desktop\zyg.cpp(105) : error C2228: left of '.size' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(106) : error C2109: subscript requires array or pointer type C:\Users\JF02\Desktop\zyg.cpp(106) : error C2109: subscript requires array or pointer type C:\Users\JF02\Desktop\zyg.cpp(118) : error C2228: left of '.size' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(119) : error C2109: subscript requires array or pointer type C:\Users\JF02\Desktop\zyg.cpp(119) : error C2440: 'initializing' : cannot convert from 'int' to 'class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >' No constructor could take the source type, or constructor overload resolution was ambiguous C:\Users\JF02\Desktop\zyg.cpp(122) : error C2109: subscript requires array or pointer type C:\Users\JF02\Desktop\zyg.cpp(122) : error C2440: 'initializing' : cannot convert from 'int' to 'class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >' No constructor could take the source type, or constructor overload resolution was ambiguous C:\Users\JF02\Desktop\zyg.cpp(129) : error C2109: subscript requires array or pointer type C:\Users\JF02\Desktop\zyg.cpp(129) : error C2109: subscript requires array or pointer type C:\Users\JF02\Desktop\zyg.cpp(129) : error C2228: left of '.empty' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(130) : error C2109: subscript requires array or pointer type C:\Users\JF02\Desktop\zyg.cpp(130) : error C2109: subscript requires array or pointer type C:\Users\JF02\Desktop\zyg.cpp(130) : error C2440: '=' : cannot convert from 'class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >' to 'int' No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called C:\Users\JF02\Desktop\zyg.cpp(133) : error C2109: subscript requires array or pointer type C:\Users\JF02\Desktop\zyg.cpp(133) : error C2440: 'initializing' : cannot convert from 'int' to 'class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >' No constructor could take the source type, or constructor overload resolution was ambiguous C:\Users\JF02\Desktop\zyg.cpp(137) : error C2109: subscript requires array or pointer type C:\Users\JF02\Desktop\zyg.cpp(137) : error C2109: subscript requires array or pointer type C:\Users\JF02\Desktop\zyg.cpp(137) : error C2228: left of '.empty' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(138) : error C2109: subscript requires array or pointer type C:\Users\JF02\Desktop\zyg.cpp(138) : error C2109: subscript requires array or pointer type C:\Users\JF02\Desktop\zyg.cpp(138) : error C2440: '=' : cannot convert from 'class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >' to 'int' No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called C:\Users\JF02\Desktop\zyg.cpp(149) : error C2109: subscript requires array or pointer type C:\Users\JF02\Desktop\zyg.cpp(149) : error C2440: 'initializing' : cannot convert from 'int' to 'class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >' No constructor could take the source type, or constructor overload resolution was ambiguous C:\Users\JF02\Desktop\zyg.cpp(153) : error C2109: subscript requires array or pointer type C:\Users\JF02\Desktop\zyg.cpp(153) : error C2109: subscript requires array or pointer type C:\Users\JF02\Desktop\zyg.cpp(153) : error C2228: left of '.empty' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(154) : error C2109: subscript requires array or pointer type C:\Users\JF02\Desktop\zyg.cpp(154) : error C2109: subscript requires array or pointer type C:\Users\JF02\Desktop\zyg.cpp(154) : error C2440: '=' : cannot convert from 'char [6]' to 'int' This conversion requires a reinterpret_cast, a C-style cast or function-style cast C:\Users\JF02\Desktop\zyg.cpp(178) : error C2039: 'push_back' : is not a member of 'basic_string<char,struct std::char_traits<char>,class std::allocator<char> >' C:\Users\JF02\Desktop\zyg.cpp(180) : error C2872: 'vector' : ambiguous symbol C:\Users\JF02\Desktop\zyg.cpp(180) : error C2143: syntax error : missing ';' before '<' C:\Users\JF02\Desktop\zyg.cpp(180) : error C2143: syntax error : missing ';' before '<' C:\Users\JF02\Desktop\zyg.cpp(181) : error C2065: 'analyStack' : undeclared identifier C:\Users\JF02\Desktop\zyg.cpp(181) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(182) : error C2228: left of '.push_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(185) : error C2440: 'initializing' : cannot convert from 'char *' to 'int' This conversion requires a reinterpret_cast, a C-style cast or function-style cast C:\Users\JF02\Desktop\zyg.cpp(191) : error C2228: left of '.begin' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(191) : error C2228: left of '.end' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(192) : error C2664: '__thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(const char *,unsigned int,const class std::allocator<char> &)' : cannot convert parameter 1 from 'int' to 'const char *' Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast C:\Users\JF02\Desktop\zyg.cpp(195) : error C2228: left of '.back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(196) : error C2100: illegal indirection C:\Users\JF02\Desktop\zyg.cpp(205) : error C2228: left of '.pop_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(210) : error C2228: left of '.pop_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(218) : error C2109: subscript requires array or pointer type C:\Users\JF02\Desktop\zyg.cpp(218) : error C2109: subscript requires array or pointer type C:\Users\JF02\Desktop\zyg.cpp(218) : error C2440: 'initializing' : cannot convert from 'int' to 'class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >' No constructor could take the source type, or constructor overload resolution was ambiguous C:\Users\JF02\Desktop\zyg.cpp(225) : error C2228: left of '.pop_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(227) : error C2228: left of '.pop_back' must have class/struct/union type C:\Users\JF02\Desktop\zyg.cpp(233) : error C2228: left of '.push_back' must have class/struct/union type 执行 cl.exe 时出错. zyg.exe - 1 error(s), 0 warning(s) 根据报错修改上面代码
05-24
std::cerr << "Out of Range Error: " () ; } ``` - 在执行任何可能引发越界的操作之前先验证索引的有效性： ```cpp if (index >= 0 && index (myVector.size())) { // 安全地访问 myVector[index] } ``` ####...
#include <iostream> #include <queue> #include <vector> #include <string> #include <algorithm> using namespace std; // 哈夫曼树节点结构体 struct HuffmanNode { char data; int freq; HuffmanNode *left, *right; HuffmanNode(char data, int freq) : data(data), freq(freq), left(NULL), right(NULL) {} }; // 用于优先队列的比较函数，频率小的节点优先 struct compare { bool operator()(HuffmanNode* l, HuffmanNode* r) { return l->freq > r->freq; } }; // 生成哈夫曼树 HuffmanNode* buildHuffmanTree(vector<pair<char, int>>& symbols) { priority_queue<HuffmanNode*, vector<HuffmanNode*>, compare> minHeap; for (auto& symbol : symbols) { minHeap.push(new HuffmanNode(symbol.first, symbol.second)); } while (minHeap.size() != 1) { HuffmanNode* left = minHeap.top(); minHeap.pop(); HuffmanNode* right = minHeap.top(); minHeap.pop(); HuffmanNode* top = new HuffmanNode('$', left->freq + right->freq); top->left = left; top->right = right; minHeap.push(top); } return minHeap.top(); } // 生成哈夫曼编码 void generateCodes(HuffmanNode* root, string str, vector<pair<char, string>>& huffmanCodes) { if (!root) return; if (!root->left && !root->right) { huffmanCodes.emplace_back(root->data, str); } generateCodes(root->left, str + "0", huffmanCodes); generateCodes(root->right, str + "1", huffmanCodes); } // 释放哈夫曼树的内存 void freeHuffmanTree(HuffmanNode* root) { if (!root) return; freeHuffmanTree(root->left); freeHuffmanTree(root->right); delete root; } int main() { int n; cout << "请输入符号的数量 (4 或 5): "; cin >> n; if (n != 4 && n != 5) { cout << "输入的符号数量必须是 4 或 5。" << endl; return 1; } vector<pair<char, int>> symbols(n); cout << "请依次输入符号及其频率（例如：a 10）：" << endl; for (int i = 0; i < n; ++i) { cin >> symbols[i].first >> symbols[i].second; } HuffmanNode* root = buildHuffmanTree(symbols); vector<pair<char, string>> huffmanCodes; generateCodes(root, "", huffmanCodes); // 按符号顺序输出哈夫曼编码 sort(huffmanCodes.begin(), huffmanCodes.end(), [](const auto& a, const auto& b) { return a.first < b.first; }); cout << "哈夫曼编码结果：" << endl; for (const auto& code : huffmanCodes) { cout << code.first << ": " << code.second << endl; } freeHuffmanTree(root); return 0; } --------------------Configuration: e - Win32 Debug-------------------- Compiling... e.cpp C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(26) : error C2146: syntax error : missing ',' before identifier 'symbols' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(26) : error C2065: 'symbols' : undeclared identifier C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(26) : error C2143: syntax error : missing ',' before ')' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(26) : error C2143: syntax error : missing ';' before '{' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(29) : error C2143: syntax error : missing ';' before '{' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(30) : error C2065: 'symbol' : undeclared identifier C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(30) : error C2228: left of '.second' must have class/struct/union type C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(30) : error C2143: syntax error : missing ',' before ')' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(31) : error C2143: syntax error : missing ';' before '}' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(33) : error C2143: syntax error : missing ';' before '{' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(39) : error C2227: left of '->freq' must point to class/struct/union C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(39) : error C2227: left of '->freq' must point to class/struct/union C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(39) : error C2143: syntax error : missing ',' before ')' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(44) : error C2143: syntax error : missing ';' before '}' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(47) : error C2143: syntax error : missing ';' before '}' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(50) : error C2146: syntax error : missing ',' before identifier 'huffmanCodes' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(50) : error C2065: 'huffmanCodes' : undeclared identifier C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(50) : error C2143: syntax error : missing ',' before ')' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(50) : error C2143: syntax error : missing ';' before '{' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(53) : error C2143: syntax error : missing ';' before '{' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(54) : error C2065: 'str' : undeclared identifier C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(55) : error C2143: syntax error : missing ';' before '}' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(57) : error C2143: syntax error : missing ',' before ')' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(58) : error C2143: syntax error : missing ',' before ')' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(59) : error C2143: syntax error : missing ';' before '}' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(62) : error C2143: syntax error : missing ';' before '{' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(67) : error C2143: syntax error : missing ';' before '}' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(69) : error C2143: syntax error : missing ';' before '{' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(74) : error C2143: syntax error : missing ';' before '{' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(77) : error C2143: syntax error : missing ';' before '}' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(79) : error C2146: syntax error : missing ',' before identifier 'symbols' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(79) : error C2065: 'n' : undeclared identifier C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(79) : error C2143: syntax error : missing '>' before ';' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(81) : error C2143: syntax error : missing ')' before ';' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(81) : error C2059: syntax error : ')' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(81) : error C2143: syntax error : missing ';' before '{' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(83) : error C2143: syntax error : missing ';' before '}' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(87) : error C2146: syntax error : missing ',' before identifier 'huffmanCodes' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(87) : error C2143: syntax error : missing '>' before ';' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(88) : error C2143: syntax error : missing ',' before ')' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(91) : error C2228: left of '.end' must have class/struct/union type C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(91) : error C2059: syntax error : '[' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(91) : error C2143: syntax error : missing ')' before '{' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(91) : error C2143: syntax error : missing ';' before '{' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(93) : error C2143: syntax error : missing ';' before '}' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(93) : error C2059: syntax error : ')' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(96) : error C2143: syntax error : missing ';' before '{' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(98) : error C2143: syntax error : missing ';' before '}' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(103) : error C2143: syntax error : missing ';' before '}' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(104) : error C2143: syntax error : missing ';' before '}' C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\e\e.cpp(104) : fatal error C1001: INTERNAL COMPILER ERROR (compiler file 'Y?, line 1) Please choose the Technical Support command on the Visual C++ Help menu, or open the Technical Support help file for more information 执行 cl.exe 时出错. e.exe - 1 error(s), 0 warning(s)
12-02
#### `error C2228: left of '.second' must have class/struct/union type` 此错误表明尝试对非类、结构体或联合体类型使用 `.second` 成员访问。要确保访问的对象是 `std::pair` 类型。例如，在遍历 `symbols` 时...
--------------------Configuration: e - Win32 Debug-------------------- Compiling... e.cpp c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(15) : error C2065: 'nullptr' : undeclared identifier c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(15) : error C2440: 'initializing' : cannot convert from 'int' to 'struct HuffmanNode *' Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(15) : error C2439: 'left' : member could not be initialized c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(13) : see declaration of 'left' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(15) : error C2440: 'initializing' : cannot convert from 'int' to 'struct HuffmanNode *' Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(15) : error C2439: 'right' : member could not be initialized c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(13) : see declaration of 'right' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(26) : error C2146: syntax error : missing ',' before identifier 'symbols' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(26) : error C2065: 'symbols' : undeclared identifier c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(26) : error C2143: syntax error : missing ',' before ')' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(26) : error C2143: syntax error : missing ';' before '{' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(29) : error C2143: syntax error : missing ';' before '{' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(30) : error C2065: 'symbol' : undeclared identifier c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(30) : error C2228: left of '.second' must have class/struct/union type c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(30) : error C2143: syntax error : missing ',' before ')' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(31) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(33) : error C2143: syntax error : missing ';' before '{' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(39) : error C2227: left of '->freq' must point to class/struct/union c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(39) : error C2227: left of '->freq' must point to class/struct/union c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(39) : error C2143: syntax error : missing ',' before ')' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(44) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(47) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(50) : error C2146: syntax error : missing ',' before identifier 'huffmanCodes' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(50) : error C2065: 'huffmanCodes' : undeclared identifier c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(50) : error C2143: syntax error : missing ',' before ')' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(50) : error C2143: syntax error : missing ';' before '{' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(53) : error C2143: syntax error : missing ';' before '{' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(54) : error C2065: 'str' : undeclared identifier c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(55) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(57) : error C2143: syntax error : missing ',' before ')' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(58) : error C2143: syntax error : missing ',' before ')' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(59) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(62) : error C2143: syntax error : missing ';' before '{' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(67) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(69) : error C2143: syntax error : missing ';' before '{' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(74) : error C2143: syntax error : missing ';' before '{' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(77) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(79) : error C2146: syntax error : missing ',' before identifier 'symbols' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(79) : error C2065: 'n' : undeclared identifier c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(79) : error C2143: syntax error : missing '>' before ';' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(81) : error C2143: syntax error : missing ')' before ';' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(81) : error C2059: syntax error : ')' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(81) : error C2143: syntax error : missing ';' before '{' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(83) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(87) : error C2146: syntax error : missing ',' before identifier 'huffmanCodes' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(87) : error C2143: syntax error : missing '>' before ';' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(88) : error C2143: syntax error : missing ',' before ')' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(91) : error C2228: left of '.end' must have class/struct/union type c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(91) : error C2059: syntax error : '[' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(91) : error C2143: syntax error : missing ')' before '{' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(91) : error C2143: syntax error : missing ';' before '{' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(93) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(93) : error C2059: syntax error : ')' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(96) : error C2143: syntax error : missing ';' before '{' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(98) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(103) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(104) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\e\e.cpp(104) : fatal error C1001: INTERNAL COMPILER ERROR (compiler file 'Y?, line 1) Please choose the Technical Support command on the Visual C++ Help menu, or open the Technical Support help file for more information 执行 cl.exe 时出错. e.exe - 1 error(s), 0 warning(s)
12-02
cout 请依次输入符号及其频率（例如：a 10）：" ; for (int i = 0; i ; ++i) { cin >> symbols[i].first >> symbols[i].second; } HuffmanNode* root = buildHuffmanTree(symbols); vector, string>> ...
#include <iostream> #include <queue> #include <vector> #include <string> #include <algorithm> using namespace std; // 哈夫曼树节点结构体 struct HuffmanNode { char data; int freq; HuffmanNode *left, *right; HuffmanNode(char data, int freq) : data(data), freq(freq), left(nullptr), right(nullptr) {} }; // 用于优先队列的比较函数，频率小的节点优先 struct compare { bool operator()(HuffmanNode* l, HuffmanNode* r) { return l->freq > r->freq; } }; // 生成哈夫曼树 HuffmanNode* buildHuffmanTree(vector<pair<char, int>>& symbols) { priority_queue<HuffmanNode*, vector<HuffmanNode*>, compare> minHeap; for (auto& symbol : symbols) { minHeap.push(new HuffmanNode(symbol.first, symbol.second)); } while (minHeap.size() != 1) { HuffmanNode* left = minHeap.top(); minHeap.pop(); HuffmanNode* right = minHeap.top(); minHeap.pop(); HuffmanNode* top = new HuffmanNode('$', left->freq + right->freq); top->left = left; top->right = right; minHeap.push(top); } return minHeap.top(); } // 生成哈夫曼编码 void generateCodes(HuffmanNode* root, string str, vector<pair<char, string>>& huffmanCodes) { if (!root) return; if (!root->left && !root->right) { huffmanCodes.emplace_back(root->data, str); } generateCodes(root->left, str + "0", huffmanCodes); generateCodes(root->right, str + "1", huffmanCodes); } // 释放哈夫曼树的内存 void freeHuffmanTree(HuffmanNode* root) { if (!root) return; freeHuffmanTree(root->left); freeHuffmanTree(root->right); delete root; } int main() { int n; cout << "请输入符号的数量 (4 或 5): "; cin >> n; if (n != 4 && n != 5) { cout << "输入的符号数量必须是 4 或 5。" << endl; return 1; } vector<pair<char, int>> symbols(n); cout << "请依次输入符号及其频率（例如：a 10）：" << endl; for (int i = 0; i < n; ++i) { cin >> symbols[i].first >> symbols[i].second; } HuffmanNode* root = buildHuffmanTree(symbols); vector<pair<char, string>> huffmanCodes; generateCodes(root, "", huffmanCodes); // 按符号顺序输出哈夫曼编码 sort(huffmanCodes.begin(), huffmanCodes.end(), [](const auto& a, const auto& b) { return a.first < b.first; }); cout << "哈夫曼编码结果：" << endl; for (const auto& code : huffmanCodes) { cout << code.first << ": " << code.second << endl; } freeHuffmanTree(root); return 0; } --------------------Configuration: Y - Win32 Debug-------------------- Compiling... Y.cpp c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(15) : error C2065: 'nullptr' : undeclared identifier c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(15) : error C2440: 'initializing' : cannot convert from 'int' to 'struct HuffmanNode *' Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(15) : error C2439: 'left' : member could not be initialized c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(13) : see declaration of 'left' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(15) : error C2440: 'initializing' : cannot convert from 'int' to 'struct HuffmanNode *' Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(15) : error C2439: 'right' : member could not be initialized c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(13) : see declaration of 'right' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(26) : error C2146: syntax error : missing ',' before identifier 'symbols' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(26) : error C2065: 'symbols' : undeclared identifier c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(26) : error C2143: syntax error : missing ',' before ')' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(26) : error C2143: syntax error : missing ';' before '{' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(29) : error C2143: syntax error : missing ';' before '{' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(30) : error C2065: 'symbol' : undeclared identifier c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(30) : error C2228: left of '.second' must have class/struct/union type c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(30) : error C2143: syntax error : missing ',' before ')' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(31) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(33) : error C2143: syntax error : missing ';' before '{' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(39) : error C2227: left of '->freq' must point to class/struct/union c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(39) : error C2227: left of '->freq' must point to class/struct/union c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(39) : error C2143: syntax error : missing ',' before ')' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(44) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(47) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(50) : error C2146: syntax error : missing ',' before identifier 'huffmanCodes' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(50) : error C2065: 'huffmanCodes' : undeclared identifier c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(50) : error C2143: syntax error : missing ',' before ')' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(50) : error C2143: syntax error : missing ';' before '{' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(53) : error C2143: syntax error : missing ';' before '{' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(54) : error C2065: 'str' : undeclared identifier c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(55) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(57) : error C2143: syntax error : missing ',' before ')' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(58) : error C2143: syntax error : missing ',' before ')' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(59) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(62) : error C2143: syntax error : missing ';' before '{' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(67) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(69) : error C2143: syntax error : missing ';' before '{' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(74) : error C2143: syntax error : missing ';' before '{' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(77) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(79) : error C2146: syntax error : missing ',' before identifier 'symbols' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(79) : error C2065: 'n' : undeclared identifier c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(79) : error C2143: syntax error : missing '>' before ';' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(81) : error C2143: syntax error : missing ')' before ';' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(81) : error C2059: syntax error : ')' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(81) : error C2143: syntax error : missing ';' before '{' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(83) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(87) : error C2146: syntax error : missing ',' before identifier 'huffmanCodes' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(87) : error C2143: syntax error : missing '>' before ';' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(88) : error C2143: syntax error : missing ',' before ')' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(91) : error C2228: left of '.end' must have class/struct/union type c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(91) : error C2059: syntax error : '[' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(91) : error C2143: syntax error : missing ')' before '{' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(91) : error C2143: syntax error : missing ';' before '{' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(93) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(93) : error C2059: syntax error : ')' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(96) : error C2143: syntax error : missing ';' before '{' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(98) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(103) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(104) : error C2143: syntax error : missing ';' before '}' c:\program files (x86)\microsoft visual studio\myprojects\y\y.cpp(104) : fatal error C1001: INTERNAL COMPILER ERROR (compiler file 'Y?, line 1) Please choose the Technical Support command on the Visual C++ Help menu, or open the Technical Support help file for more information 执行 cl.exe 时出错. Y.exe - 1 error(s), 0 warning(s)
最新发布
12-02
cout 请依次输入符号及其频率（例如：a 10）：" ; for (int i = 0; i ; ++i) { cin >> symbols[i].first >> symbols[i].second; } HuffmanNode* root = buildHuffmanTree(symbols); vector, string>> ...
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