map 嵌套使用
#include<map>#include<iostream>#include <string>using namespace std;int main(){map<int,map<int,string> >multiMap; //对于这样的map嵌套定义，map<int, string> temp;//定义一个map<int, string>变量，对其定义后在插入multiMaptemp[90] = "hi";temp[100] = "maxi";multiMap[10] = temp;multiMap[10][80]="xiaoyu"; multiMap[5][30]="xiaoma";map<int,map<int,string> >::iterator multitr; // 以下是如何遍历本multiMapmap<int,string>::iterator intertr;for(multitr=multiMap.begin();multitr!=multiMap.end();multitr++){for(intertr= multitr ->second.begin(); intertr != multitr ->second.end(); intertr ++)cout<< multitr ->first<<" "<<intertr->first<<" ("<<intertr -> second <<")"<<endl;}system("pause");return 0;}