C++ STL map的使用

C++ STL map的使用

分类: C/C++学习

2008.4.11 18:19 作者：linux0818 | 评论：2 | 阅读：758

以下是对C++中STL map的插入，查找，遍历及删除的例子：

#include <map> #include <string> #include <iostream> using namespace std;   void map_insert(map < string, string > *mapStudent, string index, string x) {     mapStudent->insert(map < string, string >::value_type(index, x)); }   int main(int argc, char **argv) {     char tmp[32] = "";     map < string, string > mapS;   //insert element     map_insert(&mapS, "192.168.0.128", "xiong");     map_insert(&mapS, "192.168.200.3", "feng");     map_insert(&mapS, "192.168.200.33", "xiongfeng");       map < string, string >::iterator iter;       cout << "We Have Third Element:" << endl;     cout << "-----------------------------" << endl;   //find element     iter = mapS.find("192.168.0.33");     if (iter != mapS.end()) {         cout << "find the elememt" << endl;         cout << "It is:" << iter->second << endl;     } else {         cout << "not find the element" << endl;     }   //see element     for (iter = mapS.begin(); iter != mapS.end(); iter ) {           cout << "| " << iter->first << " | " << iter->             second << " |" << endl;       }     cout << "-----------------------------" << endl;       map_insert(&mapS, "192.168.30.23", "xf");       cout << "After We Insert One Element:" << endl;     cout << "-----------------------------" << endl;     for (iter = mapS.begin(); iter != mapS.end(); iter ) {           cout << "| " << iter->first << " | " << iter->             second << " |" << endl;       }

 

    cout << "-----------------------------" << endl;   //delete element     iter = mapS.find("192.168.200.33");     if (iter != mapS.end()) {         cout << "find the element:" << iter->first << endl;         cout << "delete element:" << iter->first << endl;         cout << "=================================" << endl;         mapS.erase(iter);     } else {         cout << "not find the element" << endl;     }     for (iter = mapS.begin(); iter != mapS.end(); iter ) {           cout << "| " << iter->first << " | " << iter->             second << " |" << endl;       }     cout << "=================================" << endl;          return 0; }