C Program to Find the Size of Variables using Sizeof () Operator

#include<stdio.h>

#include<conio.h>

void main() 

{

    int integernum;

    float floatnum;

    char charname;

    clrscr();

     printf("Size of char  : %lu byte\n", sizeof(charname));

    printf("Size of int  : %lu bytes\n", sizeof(integernum));

    printf("Size of float  : %lu bytes\n", sizeof(floatnum));

    getch();

}

Output

Size of char  : 1 byte

Size of int  : 4 bytes

Size of float  : 4 bytes