Sizeof Operator

The size of structure and union can be defined by the sizeof operator.

#include <stdio.h>

#include <conio.h>

struct student1

{

            int rollno;

            char name [20];

};

union student2

{

             int rollno;

            char name [20];

};

main ( )

{

            struct student1 s1;

            union student2 s2;

            clrscr( );

            printf (“\n Memory for structure =%d”, sizeof(s1));

            printf (“\n Memory for union =%d”, sizeof(s2));

getch ( );

}

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