Question

Is there a way I can mute all my printf statements conditionally, however, without using any macros? I want to accomplish the muting without touching the already existing code, but adding a line to my module which would simply disable all printf’s already existing in the source code.

Thanks!

Answer 1

If you want to nullify all output to stdout via printf, puts, putchar, etc., you can use freopen(3) to redirect it to a bit bucket, e.g.:

// On Unix and Unix-like systems:
freopen("/dev/null", "w", stdout);
// On Windows:
freopen("NUL", "w", stdout);