write a program to print following number pattern ?

4 3 2 1
  3 2 1
    2 1
      1
Program:
#include<stdio.h>
#include<conio.h>
void main()
{
   int r, p, k,g=0;
   clrscr();
   printf("\n enter the no of row");
   scanf("%d", &r);
   for ( k = r ; k >= 1 ; k-- )
   {
       for ( p = 1 ; p <= g; p++ )
       printf(" ");
       g++;
       for ( p = r;p >0 ; p --)
       printf("%d", p);
       r--;
       printf("\n");
   }
   getch();
}
Output: