try this code:

Code:
#include <stdio.h>

int main(void)
{
    printf("Hello World!");
    return 0;
}
this will give a normal sized program.
i don't know why it is that big with your code, i have tried altering it, but it still stays big 400+ kb.

but i'm not a C++ coder, i just know C, and the above code is C, the only advantage is that you can use it in a cpp file also.