// C program to illustrate the above given pattern of numbers.

#include<stdio.h>

int main()

{

int n = 5, i, j, num = 1, gap;

gap = n - 1;

for ( j = 1 ; j <= n ; j++ )

{

num = j;

for ( i = 1 ; i <= gap ; i++ )

printf(" ");

gap --;

for ( i = 1 ; i <= j ; i++ )

{

printf("%d", num);

num++;

}

num--;

num--;

for ( i = 1 ; i < j ; i++)

{

printf("%d", num);

num--;

}

printf("\n");

}

return 0;

}