#define question: are all occurences replaced?

[Epy]

If I were to put an instance of something that has been #defined inside a string, would it still get replaced? i.e.

#include <stdio.h>

#define MYSTRING hello

int main(void)
{
    puts("MYSTRING world!");

    return 0;
}

Would this return "MYSTRING world!" or "hello world!"?

Now, I know I could've just tested that myself, but my other question is if this is preprocessor specific behavior or if it's standards defined or what. Whichever result, can I assume that all compilers would treat it the same way?

[laserlight]

If I were to put an instance of something that has been #defined inside a string, would it still get replaced?

No. If you want to hear from the horse's mouth for precisely this case that you have in mind:

Since, by macro-replacement time, all character constants and string literals are preprocessing tokens, not sequences possibly containing identifier-like subsequences, they are never scanned for macro names or parameters.

[Epy]

Thanks laserlight!