What is the size of long int in C?

Main types

Type	Minimum size (bits)	Range
int signed signed int	16	INT_MIN / INT_MAX
unsigned unsigned int	16	0 / UINT_MAX
long long int signed long signed long int	32	LONG_MIN / LONG_MAX
unsigned long unsigned long int	32	0 / ULONG_MAX

What is the size of long int in bits?

Data Types and Sizes

Type Name	32–bit Size	64–bit Size
short	2 bytes	2 bytes
int	4 bytes	4 bytes
long	4 bytes	8 bytes
long long	8 bytes	8 bytes

How big is a long?

64-bit UNIX applications

Name	Length
char	1 byte
short	2 bytes
int	4 bytes
long	8 bytes

What is long long in C?

The long long takes twice as much memory as long. In different systems, the allocated memory space differs. On Linux environment the long takes 64-bit (8-bytes) of space, and the long long takes 128-bits (16-bytes) of space. This is used when we want to deal with some large value of integers.

What is long long?

LongLong (LongLong integer) variables are stored as signed 64-bit (8-byte) numbers ranging in value from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807. The type-declaration character for LongLong is the caret (^). LongLong is a valid declared type only on 64-bit platforms.

How do I know my long size?

Use code sizeof(long int) and check the size. It will give you the size of long int in bytes on the system you’re working currently.

Why is an integer 4 bytes?

So the reason why you are seeing an int as 4 bytes (32 bits), is because the code is compiled to be executed efficiently by a 32-bit CPU. If the same code were compiled for a 16-bit CPU the int may be 16 bits, and on a 64-bit CPU it may be 64 bits.

Is Long same as int?

The long is a larger data type than int. The difference between int and long is that int is 32 bits in width while long is 64 bits in width.