What is the value of ~0 in C?

Question

I want to get the values of INT_MIN and INT_MAX. I\'ve tried ~0 and ~0 >> 1 since the leftmost bit is a sign bit bu

Answer 1

numbers are stored in 2's compliment so ~0 is 0XFFFFFFFF which is -1 .
so FFFFFFF(1111) >>1 gives (1111)FFFFFFF = 0XFFFFFFFF = -1.

When shifting an unsigned value, the >> operator in C is a logical shift. When shifting a signed value, the >> operator is an arithmetic shift.
So , ~0U >> 1 gives (1111)FFFFFFF = 0XFFFFFFFF .