代码:
#include<bits/stdc++.h>
using namespace std;
int main()
{
string ss;
char c1='5';
char c2='2';
char c3='0';
ss+=c1;
ss+=c2;
ss+=c3;
cout<<ss;
return 0;
}
输出结果:
520
应用:
https://www.acwing.com/activity/content/code/content/5420318/