How Does the sizeof Operator Work in C?

Introduction

The sizeof operator in C is used to determine the size of data types or variables at compile time…

Syntax

The syntax is straightforward:

sizeof(type);

Usage Examples

To find the size of an integer:

printf("Size of int: %lun", sizeof(int));

Special Cases

The sizeof operator can also be applied to arrays, pointers, and structures. Example:

int arr[10];
printf("Size of array: %lun", sizeof(arr));