Is using a while block to do nothing a bad thing?

Question

I\'m currently working through the excercises in \'The C Programming Language\'. Here\'s one of my solutions:

int c;

while ((c=getchar()) != EOF) {

if (c == \         


        

Answer 1

Well, not really but it depends on your architecture.

if (dosomething()) { ; }

The above is going to constantly be pushing and popping from your local stack, which has a memory overhead. Also, you will also be flushing your processors' pipelines with noop operations.