Saturday 1 November 2014

22. Write a program to swap the two values using pointers and UDF.

Unknown 18:04 BCA , C , C++ Program No comments :

PRO-22:

#include<stdio.h>

#include<conio.h>

void swap(int*,int*);

void main()

{ int x,y,*pa,*pb;

clrscr();

pa=&x;

pb=&y;

x=10;

y=20;

printf("\nBefore Swap :: X =%d Y =

%d",x,y);

swap(pa,pb);

printf("\n\nAfter Swap :: X =%d Y = %d",

x,y);

getch();

}

void swap(int *u,int *v)

{ int temp;

temp=*u;

*u=*v;

*v=temp;

}

OUTPUT:

Before Swap :: X =10 Y = 20

After Swap :: X =20 Y = 10