program-to-print-the-pattern

#include <stdio.h>
main()
{
int i, j, k, space, n=9;
for (i=1; i<=n; i++)
{
for (j=1; j<=n-i; j++)
putchar(' ');
for (j=1,k=2*i-1; j<=2*i-1; j++,k--)
{
if (j <= k)
printf("%d", j);
else
printf("%d", k);
}
putchar('\n');
}
getch();
}