How many bytes does long occupy?

long occupies 4 bytes; long represents a kind of long integer data, which is a basic data type in programming languages. It is the abbreviation of "long int". The default is signed long integer, including 4 bytes, the value range is "-2^31 ~ (2^31 -1)".

#The operating environment of this tutorial: Windows 10 system, version C11, Dell G3 computer.

How many bytes does long occupy?

4.

The long keyword represents a kind of long integer data, which is a basic data type in programming languages. It is the abbreviation of long int. The default is signed long integer type, containing 4 bytes, and the value is The range is: -2^31 ~ (2^31 -1).

The long integer data type is a data type commonly used in programming languages ​​such as C language.

The long integer data type is divided into signed long integer and unsigned long integer. The respective value ranges are as follows:

(1) Long integer type

Type identifier: long[int]

Bytes: 4

Value range on 32-bit machine: -2147483648~2147483647 (-2^31~(2^31- 1))

Portably, write -LONG_MAX-1 ~LONG_MAX

(2) Unsigned long

type Identifier: unsigned long[int]

Bytes: 4

Value range on 32-bit machine: 0~4294967295 (0~(2^ 32-1))

Portably, write 0 ~ ULONG_MAX

Application example

#include <stdio.h>
 
int main()
 
{
 
    printf("short=%d\n\n",sizeof(short));
 
   printf("int=%d\n\n",sizeof(int));
   
   printf("long=%d\n\n",sizeof(long));
 
    printf("float=%d\n\n",sizeof(float));
   
   printf("double=%d\n",sizeof(double));
 
}

The output result on a 32-bit machine is:

short=2
int=4
long=4
float=4
double=8

Recommended learning: "C Video Tutorial"

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