Multiple conditions in a C 'for' loop

Question

I came across this piece of code. I generally use \'&&\' or \'||\' to separate multiple conditions in a for loop, but this code uses commas to do that.<

Answer 1

Wikipedia tells what comma operator does:

"In the C and C++ programming languages, the comma operator (represented by the token ,) is a binary operator that evaluates its first operand and discards the result, and then evaluates the second operand and returns this value (and type)."