Please, help me understand, how turn on printf and scanf in my program.
If I write :
int Solution (int n, int a, int b)
{
    return (2*n*a*b);
}

int main()
{
    int n,a,b;
    scanf ("%d %d %d", &n, &a, &b);
    printf ("%d", Solution (n,a,b));
    return 0;
}

system will throw "Compilation error" with
vtje2d-4h6iqg.cpp(9) : error C3861: 'scanf': identifier not found
vtje2d-4h6iqg.cpp(10) : error C3861: 'printf': identifier not found.

If i write the same, with #include "stdafx.h" on the top, system will throw "Compilation error" with
rvkkio-7db2pu.cpp(4) : fatal error C1083: Cannot open include file: 'stdafx.h': No such file or directory

#include <cstdio>

Edited by author 30.03.2016 12:44