pattern subin 13.4 .c

#include<stdio.h>
int main()
{
    int n,i,j;
    while(scanf("%d",&n)==1){
         for(i=0;i<n;i++){
            for(j=0;j<=i;j++){
                printf("* ");
            }
          for(j=n-1;j>i;j--){
                printf("  ");
                printf("  ");
            }
            for(j=0;j<=i;j++){
                printf("* ");
            }
            printf("\n");
        }
    }
    return 0;
}