[C/C++ 문법] int to string, string to int 변환

#include <iostream>

#include <cstring>

using namespace std;

int main(){

int a = 10;

//int to string

string str = to_string(a);

//string to int

int b = stoi(str);

cout << str << endl;

cout << a+b << endl;

}

결과 : 

10

20