Size of Operator

C provides a compiler-time unary operator called sizeof that can be used to compute the size of any object.

The expression such as:

• sizeof object
• sizeof(type name)

Example :

    #include<stdio.h>

    int main()
    {

    printf("size of int in byte : %d\n", sizeof(int));
    printf("size of char in byte %d\n", sizeof(char));
    printf("size of float in byte %d", sizeof(float));

    return 0;
    }

Output :

 size of int in byte :  4
 size of char in byte 1
 size of float in byte 4