#include<stdio.h>
#include<conio.h>
int computing (int,int);
int main()
{
clrscr();
int x,y,z;
printf ("Enter an integer:");
scanf ("%d",&x);
printf ("Enter an integer:");
scanf ("%d",&y);
z=computing(x,y);
printf ("%d",z);
getch();
return 0;
}
int computing (int a,int b)
{
if (b==0)
return 0;
else
return computing(a,b-1)+a;
}