getc() vs fgetc() - What are the major differences?

Question

Everywhere I see \"it is practically identical\", or something similar...

From The GNU C Programming Tutorial :

There is another function in t

Answer 1

Seems like the differences are, in 99.9% of the cases, meaningless.

One point which may make a difference - The man page says getc() may be implemented as a macro which evaluates stream more than once.

It could lead to strange behavior in some (not very useful) cases, e.g.:

FILE *my_files[10] = {...}, *f=&my_files[0];
for (i=0; i<10; i++) {
    int c = getc(f++);    // Parameter to getc has side effects!
}

If getc evaluates f++ more than once, it will advance f more than once per iteration. In comparison, fgetc is safe in such situations.