> viod main()
> {
>    int a,b;
>    cin>>a>>b;
>    cout<<a+b<<endl;
> }

Oh. = =、

Code:

#include <iostream>

int main( void )
{
    int a, b;

    std::cin >> a >> b;
    std::cout<< a+b << std::endl;

    return 0;
}