Signed int range confusion

Question

This question might be very basic but i post here only after days of googling and for my proper basic understanding of signed integers in C.

Actually some say signed int

Answer 1

It depends on your environment and typically int can store -2147483648 to 2147483647 if it is 32-bit long and two's complement is used, but C specification says that int can store at least -32767 to 32767.

Quote from N1256 5.2.4.2.1 Sizes of integer types

Their implementation-defined values shall be equal or greater in magnitude (absolute value) to those shown, with the same sign.

— minimum value for an object of type int
INT_MIN -32767 // −(2 ¹⁵ − 1)
— maximum value for an object of type int
INT_MAX +32767 // 2 ¹⁵ − 1`