Sizeof operator

Sizeof operator calculate the size of data i.e. how many bit a specific data having.

Syntax of sizeof operator :

printf("<format string>",sizeof<(data type variable)>);

 /*Program to sizeof operator*/

 #include<stdio.h>

 #include<conio.h>

 void main()

 {

  int x=10;

  clrscr();

  printf("\nSize of  x is %d",sizeof(x));

  getch();

 }

  Output of above program :

  Size of x is 2 

We read in data type chapter that an int allocate only 2 byte in memory,Hence, x = 2.