Program to print pyramid of numbers

#include<stdio.h>
void main()
{
        int i,n,j;
        printf("\n Enter Value of N:  ");
        scanf("%d",&n);
        for(i=0;i<n;i++)
        {
            for(j=0;j<n-i;j++)
            printf("  ");
            for(j=i;j>=0;j--)
            printf(" %d",j);
            for(j=1;j<=i;j++)
            printf(" %d",j);
            printf("\n");
        }
}

/* 

 
     Enter Value of N:  9


                       0
                     1 0 1
                   2 1 0 1 2
                 3 2 1 0 1 2 3
               4 3 2 1 0 1 2 3 4
             5 4 3 2 1 0 1 2 3 4 5
           6 5 4 3 2 1 0 1 2 3 4 5 6
         7 6 5 4 3 2 1 0 1 2 3 4 5 6 7
       8 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 8
 

*/