Random not declared in scope

Question

I am getting the error:

tester.cpp|20|error: 'rand' was not declared in this scope|

Did I miss to include something here?

void tester::volumeset(bool A_B, int i, int v)
{
    if (A_B == true)
    {
        A_volumn[i] = rand(v+1);
    }else{
        B_volumn[i] = rand(v+1);
    }
}

Answer 1

random is not a standard C++ function; it's a POSIX function, so it's not available on Windows. Use rand instead, or better, the new C++11 randomness library.