Limit of Integer variable.

Question

what is the limit of integer variable in C++ ?

Answer 1

int variable takes 4 bytes
1byte = 8 bits
4 times 8 is 32
each bit can be either 1 or 0
so 2^32 is all the possible states an int can take
take into consideration the negative numbers and you will be left with
(2^31)-1 which is 2,147,483,648

TL;DR: roughly 2.15 billion

Answer 2

for signed integer :
-2147483648 to 2147483647