C++ map简单运用

 #include <iostream>
 #include <string>
 #include <map>

 using namespace std;

 typedef pair<float, string> TIntStrPair;

 map <int, TIntStrPair> IIStrMap; //<int, <float,string>>

 map <string, string> StrStrMap; // <string,string>

 int main(int argc, char *argv[]) {

     map <int ,string> IntStrMap;

     IntStrMap.insert(pair<int,string>(, "Tom"));
     IntStrMap.insert(pair<int,string>(, "Jimes"));
     IntStrMap.insert(pair<int, string>(, "Mary"));
     IntStrMap.insert(make_pair(, "Adom")); //use make_pair();

     map<int,string>::iterator it;

     for (it = IntStrMap.begin(); it != IntStrMap.end(); it++) {
         cout << it->first << " " << it->second << endl;
     }

     cout << "-------------------------------" << endl;

     IIStrMap.insert(pair<int, TIntStrPair>(, pair<float, string>(1.1, "Tom")));
     IIStrMap.insert(pair<int, TIntStrPair>(, pair<float, string>(2.1, "Fantex")));

         IIStrMap.insert(make_pair(, make_pair(3.2, "Jimes")));//use make_pair()

     map<int, TIntStrPair>::iterator It;

     for (It = IIStrMap.begin(); It != IIStrMap.end(); It++) {
         cout << It->first << " " << It->second.first << " " << It->second.second << endl;
     }

     cout << "----------------------------------" << endl;

     StrStrMap.insert(pair<string,string>("md5sum", "true"));
     StrStrMap.insert(pair<string,string>("sigcheck", "false"));
     StrStrMap.insert(pair<string, string>("ors_path", "/sdcard/ors"));

     StrStrMap.insert(make_pair("time_zone", "CTS"));// use make_pair();

     cout << "list the value " << endl;

     map<string, string>::iterator iter;

     for (iter = StrStrMap.begin(); iter != StrStrMap.end(); iter++) {
         cout << iter->first << " = " << iter->second << endl;
     }

     cout << "change the value " << endl;

     iter = StrStrMap.begin();

     iter = StrStrMap.find("md5sum");
     iter->second = "false";

     cout << "list the vale after change it " << endl;

     for (iter = StrStrMap.begin(); iter != StrStrMap.end(); iter++) {
         cout << iter->first << " = " << iter->second << endl;
     }

     cout << "----------------------------------------" << endl;

     cout << "erase the element " << endl;

     iter = StrStrMap.begin();

     iter = StrStrMap.find("md5sum");
     StrStrMap.erase(iter);

         for (iter = StrStrMap.begin(); iter != StrStrMap.end(); iter++) {
         cout << iter->first << " = " << iter->second << endl;
     }

     return ;

 }