pattern with numbers v1.c

/*
    pattern with numbers v1.c

 Enter a number between 1 and 9 ,    n = 9

1 - - - - - - - - - - - - - - - - 1
1 2 - - - - - - - - - - - - - - 2 1
1 2 3 - - - - - - - - - - - - 3 2 1
1 2 3 4 - - - - - - - - - - 4 3 2 1
1 2 3 4 5 - - - - - - - - 5 4 3 2 1
1 2 3 4 5 6 - - - - - - 6 5 4 3 2 1
1 2 3 4 5 6 7 - - - - 7 6 5 4 3 2 1
1 2 3 4 5 6 7 8 - - 8 7 6 5 4 3 2 1
1 2 3 4 5 6 7 8 9 9 8 7 6 5 4 3 2 1
1 2 3 4 5 6 7 8 - - 8 7 6 5 4 3 2 1
1 2 3 4 5 6 7 - - - - 7 6 5 4 3 2 1
1 2 3 4 5 6 - - - - - - 6 5 4 3 2 1
1 2 3 4 5 - - - - - - - - 5 4 3 2 1
1 2 3 4 - - - - - - - - - - 4 3 2 1
1 2 3 - - - - - - - - - - - - 3 2 1
1 2 - - - - - - - - - - - - - - 2 1
1 - - - - - - - - - - - - - - - - 1


getch(); is here for you to see how this algorithm works.

After that, delete lines with getch();

and printf("- "); replace with printf("  ");

*/

#include "stdio.h"

int main(void)
{
    int i, j, n, s;

    printf("\n Enter a number between 1 and 9 ,  n = ");
    scanf("%d", &n);

    printf("\n\n");

    for (i = 1; i <= n; i++)        // printing upper half of the pattern, row by row
    {
        for (j = 1; j <= i; j++)        // printing left numbers in row i
        {
            printf("%d ",j);
        }
getch();
        for(s=1; s <= 2 * (n - i); s++) // printing spaces in row i
        {
            printf("- ");               // change with: printf("  ");
        }
getch();
        for (j = i; j >= 1; j--)        // printing right numbers in row i
        {
            printf("%d ",j);
        }

        printf("\n");                   // go to next row i
    }


    for (i = n-1; i >= 1; i--)      // printing lower half of the pattern, row by row
    {
        for (j = 1; j <= i; j++)        // printing numbers
        {
            printf("%d ",j);
        }
getch();
        for(s=1; s <= 2 * (n - i); s++) // printing spaces
        {
            printf("- ");               // change with: printf("  ");
        }
getch();
        for (j = i; j >= 1; j--)        // printing numbers
        {
            printf("%d ",j);
        }

        printf("\n");                   // go to next row i
    }


    return 0;
}