Function Program24

// With return value, with argument: swapping of two numbers

#include<stdio.h>

#include<conio.h>

int swap(int *, int *);

void main()

{

int a, b;

clrscr();

printf("\nEnter value of a: ");

scanf("%d", &a);

printf("\nEnter value of b: ");

scanf("%d", &b);

printf("\n\nBefore swaping\tA: %d\tB: %d", a, b);

// Function return only one value

// We need here more than one value, so we are passing reference

swap(&a, &b);

printf("\n\nAfter swaping\tA: %d\tB: %d", a, b);

getch();

}

int swap(int *a, int *b)

{

int temp;

temp = *a;

*a = *b;

*b = temp;

}