[완료]변수명을 참조하기

#include <map>
#include <string>
#include <iostream>
 
using namespace std;
 
int main()
{
    map<string, int>    mapA;
    mapA["varA"] = 10;
    mapA["varB"] = 20;
 
    string var;
    cin >> var;
    map<string, int>::iterator i = mapA.find( var );
    if( i != mapA.end() ) {
        cout << i->first << " = " << i->second << endl;
    }
    else {
        cout << var << " is not exist.\n";
    }
 
    return 0;
}
 
출력결과
 
$ ./var
varA
varA = 10
 
$ ./var
varB
varB = 20
 
$ ./var
varC
varC is not exist.