When running the following code I get no output but I cannot work out why.

# include <stdio.h>

int main()
{
    fputs("hello", stdout);

    while (1);

    return 0;
}

Without the while loop it works perfectly but as soon as I add it in I get no output. Surely it should output before starting the loop? Is it just on my system? Do I have to flush some sort of buffer or something?

Thanks in advance.