How does return work here?

Question

new question: but why the expression from n == number, from firstFactorPtr == factor1 ?

Can somebody explain me, how this works:

return ( factor ==

Answer 1

In a nutshell:

 return foo == bar;

is equivalent to

 return foo == bar ? 1 : 0;

since relational operators like == yield either 0 or 1. Does that make it clear?