fgetc(stdin) in a loop is producing strange behaviour

Question

I have this code

while(1){
    printf(\"hello world !\\n\");
    fgetc(stdin);
}

when this runs and I enter a letter like this:

<         


        

Answer 1

You have two characters there, 'a' and '\n'. That is the problem, because fgetc will only read ONE character. This is the documentation.

If you enter only a '\n' - hit enter only - you will have the expected behaviour.

Hope it helps!