Logical Expressions in C misunderstanding

Question

So, I was writing some code and I was getting an unexpected output in one part of my program which disrupted the entire system.

I managed to extract and simplify th

Answer 1

&& has higher precedence than ||. (See https://en.wikipedia.org/wiki/Operators_in_C_and_C%2B%2B ) so

++i || ++j && k

is

++i || (++j && k)

and || shortcircuits if the first operator is truthy, as per 6.5.14p4 .

If you're on gcc or clang and compile your code with -Wall, the compiler will nudge you to put those parentheses there. It's probably a good idea to heed that advice, as some people get confused by the precedences (I hear).