/* Pattern Problem
	 1
    121
  12321
1234321
    ...
*/

#include  <stdio.h>
#include  <conio.h>

void main()
{
    int  i, j, n ;
    clrscr() ;
    printf("Enter the number of lines: ") ;
    scanf("%d", &n) ;
    printf("Required pattern is as follows: \n") ;
    for(i=1 ; i<=n ; i++)
        {
            /* Managing spaces */
            for(j=1 ; j<=n-i ; j++)
                printf(" ") ;
            /* Printing from left to Centre */
            for(j=1 ; j<=i ; j++)
                printf("%d", j) ;
            /* Printing to the right of Centre */
            for(j=i-1 ; j>=1 ; j--)
                printf("%d", j) ;
            printf("\n") ;
        }
    getch();
}

/*
Give one extra space in each printf() if the pattern is:
      1
   1 2 1
1 2 3 2 1
*/

/*
Output:

Enter the number of lines: 4
Required pattern is as follows:
      1
    121
  12321
1234321
*/