Logical equality in C

Question

[It seems odd this doesn\'t exist, so apologies in advance if it\'s a duplicate]

I want to test for logical equality in C. In other words, I want to know whether tw

Answer 1

You typically see this:

if ((a == 0) == (b == 0))

Or

if (!!a == !!b)

Since !!a evaluates to 1 if a is nonzero and 0 otherwise.

Hope this helps!