//遍历map的三种方式 //by 鸟哥 #include #include #include using namespace std; int main(){ map m{}; m[0]="aaa"; m[1]="bbb"; m[2]="ccc"; map::iterator it; //方式一 cout<<"方式一:"<::iterator iter = m.begin(); iter != m.end(); ++iter){ cout<<"key:"<first<<" value:"<second<::iterator iter=m.begin(); while(iter != m.end()){ cout<<"key:"<first<<" value:"<second< 运行结果: 方式一: key:0 value:aaa key:1 value:bbb key:2 value:ccc 方式二: key:0 value:aaa key:1 value:bbb key:2 value:ccc 方式三: key:0 value:aaa key:1 value:bbb key:2 value:ccc
运行结果:
方式一: key:0 value:aaa key:1 value:bbb key:2 value:ccc 方式二: key:0 value:aaa key:1 value:bbb key:2 value:ccc 方式三: key:0 value:aaa key:1 value:bbb key:2 value:ccc
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