Write a Program to print the following * pattern?

      *

    ***

  ***** 

*******                              

Program:

#include<stdio.h>
#include<conio.h>
void main()
{
  int n,r,a,p;
  clrscr();
  printf("enter the no of rows ");
  scanf("%d",&n);
  for(r=1;r<=n; r++)
  {
   for(p=n-r; p>=1; p--)
       printf(" ");
   for(a=r; a>=1; a--)
        printf("*");
   for(a=r; a>1; a--)
        printf("*");
   printf("\n");
  }
  getch();
}

Output: