C ++ programming online website

1. Recommend

https://wandbox.org/

2、https://www.tutorialspoint.com/compile_cpp_online.php

3、https://www.anycodes.cn/#/OnlineCode

 

 

4、https://tool.lu/coderunner/

 

test:

#include <iostream>

using namespace std;

int main() {
    cout<<"input sth."<<endl;
    string a;
    cin >>a;
    cout << a << endl;
    return 0;
}

The second will overwrite the original. Full coverage.