How to use size of operator in C Language

Size of Operator

Program to us Size of Operator in C Language

#include <stdio.h>
  int main()
  {
    int var;
    printf("size of int = %u\n", sizeof(int));
    printf("size of float = %u\n", sizeof(float));
    printf("size of var = %u\n", sizeof(var));
    printf("size of an integer constant = %u\n", sizeof(45));
    return 0;
  }
  

Output

size of int = 4
  size of float = u
  size of var = 4
  size of an integer constant = 4
  

Steps Description

• Declare integer variable “var”
• printf inbuild function to display size of integer variable “var” using another inbuilt function “
  “size of()”
• printf inbuild function to display size of float variable “var” using another inbuild function
  “size of()”
• printf inbuild function to display size of var variable “var” using another inbuild function “size of()”
• printfinbuild function to display size of an integer constant variable “var” using another inbuild function “size of()”