INTERNAL ORDERING OF STRUCTURE DATA TYPE IN C

QUES:-
Check the internal ordering of struct datatype in C.
ANS:-
/*******************************************************************************/
#include<stdio.h>
#include<conio.h>

struct s1
{
    int i1;
    char c1;
    int i2;
    char c2;
};

struct s2
{
    int i1;
    int i2;
    char c1;
    char c2;
};

int main()
{
    struct s1 var1;
    struct s2 var2;

    clrscr();
    printf("\nSize of var1 = %d",sizeof(var1));
    printf("\nSize of var2 = %d",sizeof(var2));

    printf("\n\nAddress of var1.i1 = %u",&var1.i1);
    printf("\nAddress of var1.c1 = %u",&var1.c1);
    printf("\nAddress of var1.i2 = %u",&var1.i2);
    printf("\nAddress of var1.c2 = %u",&var1.c2);


    printf("\n\nAddress of var1.i1 = %u",&var2.i1);
    printf("\nAddress of var1.i2 = %u",&var2.i2);
    printf("\nAddress of var1.c1 = %u",&var2.c1);
    printf("\nAddress of var1.c2 = %u",&var2.c2);

    getch();
    return  0;
}


/*******************************************************************************/