C PROGRAM TO SWAP TWO NUMBERS BY USING CALL BY REFERENCE

 C PROGRAM TO SWAP TWO NUMBERS BY USING CALL BY REFERENCE

 #include <stdio.h>

int swap (int *, int *);

int main()

{

    int a, b;

    printf("\nEnter Two Values:\n");

    scanf("%d %d", &a, &b);

    printf("Before Swapping:\n");

    printf("a = %d\nb = %d\n", a, b);

    swap(&a, &b);

    printf("After Swapping:\n");

    printf("a = %d\nb = %d", a, b);

    return 0;

}

int swap (int *x, int *y)

{

    int temp;

    temp = *x;

    *x = *y;

    *y = temp;

}

//OUTPUT

Enter Two Values:

3

14

Before Swapping:

a = 3

b = 14

After Swapping:

a = 14

b = 3

Enter Two Values:

200

900

Before Swapping:

a = 200

b = 900

After Swapping:

a = 900

b = 200