getting this error LNK2019: unresolved external symbol

[nadertron]

what did i do wrong?.

  #include "stdafx.h"
#include <iostream>

 int main()
{
	std::cout << "Hello world!" << std::endl;
	return 0;
}

[48T7M4Gy]

#include "stdafx.h"

Try commenting out this line, should fix it. The error arises because the linker can't find this file on your system.