C logical AND & OR operator

Question

Why when i use && operator value of z doesn’t change and when i use || operator change ?!!

https://code.sololearn.com/cqG82HfrYSY7/?ref=app

Answer 1

The expression after the && operator is not evaluated, because the first argument equals zero. „ 0 && anything“ is always false, so there is no need to calculate z++, so z remains 5.

Answer 2

thank u 🌺🌺