Here's the ubiquitous Hello World program in C++.

#include <iostream>

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

The code should appear as a single block of code in a monospaced font and with no syntax highlighting. The fifth and sixth lines should appear indented to the right, aligning under main, on line 3.

Here's a one line function definitition:

void something(); 

.

And some indented code:

    void go()
    {
    }