Program to add two number using pointers.

			#include<stdio.h>
			#include<conio.h>
			void main()
			{
			int *p1,*p2,sum;
			clrscr();
			printf("enter two no's: ");
			scanf("%d%d",&*p1,&*p2);
			sum=*p1+*p2;
			printf("sum=%d",sum);
			getch();
			}
Output:
enter two no's: 10
20
sum=30