Program to find substraction of two numbers using Pointer

#include<stdio.h>
#include<conio.h>
 void main()
 {
   clrscr();
   int a,b,c,*p,*q;
   printf("\n enter a:");
   scanf("%d",&a);
   p=&a;
   printf("\n enter b:");
   scanf("%d",&b);
   q=&b;
   c=*p-*q;
   printf("\n result=%d",c);
 getch();
 }

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