Calling functions after switching to System Menu?

I was wondering what would happen if you did this:

SYS_ResetSystem(SYS_RETURNTOMENU, 0, 0); //Go to the system menu
printf("What will this do???"); //This is called after the program calls the system menu

So since the code prints something after it exits to the system menu, would the code crash? I'm too afraid to try it myself in case it bricks my wii.

SYS_ResetSystem never returns. So your printf is never executed.

I think you need to understand what SYS_ResetSystem(SYS_ReturnToMenu, 0, 0) actually does:

1) After the function is called the program exits, so whatever you do past that won't do anything.

2) It is about 100 to 1 of a chance that it would brick your wii, if it did get executed (which it won't) the most likely thing that will happen is a crash.