STL for_each

#include <cstdlib> #include <vector> #include <list> #include <numeric> #include <algorithm> #include <iostream> #include <set> #include <string> #include <assert.h> using namespace std; // STL函数for_each(),sort(),random_shuffle().... using namespace std; struct Book{ string title; int price; }; void showBook(Book &b) { cout << _T("书名: 《") << b.title << _T("》 价格: ") << b.price << endl; }; bool compareBook(const Book & b1, const Book & b2) { if (b1.price >= b2.price)// 这里只处理了价格排序 { return true; } else return false; } int main() { Book books[]={{"C Primer Plus",45}, {"C++ Primer Plus",54}, {"深度探索C++对象模型",40}}; vector<Book> mybooks;// 声明一个空容器变量 int i; for (i=0; i < sizeof(books)/sizeof(Book); i++) { mybooks.push_back(books[i]);// 向容器尾部插入元素 }; cout << "顺序输出：" << endl; for_each(mybooks.begin(), mybooks.end(), showBook);// 使用STL函数for_each() cout << "排序输出：" << endl; sort(mybooks.begin(), mybooks.end(), compareBook); for_each(mybooks.begin(), mybooks.end(), showBook);// 使用STL函数for_each() cout << "乱序输出：" << endl; random_shuffle(mybooks.begin(), mybooks.end()); for_each(mybooks.begin(), mybooks.end(), showBook);// 使用STL函数for_each() return 0; }