Pattern Printing - Diamond Numbers - C

Given an integer N as the input, print the pattern as given in the Example Input/Output section.

Input Format: The first line contains N. 

Output Format: 2N-1 lines containing the desired pattern. 

Boundary Conditions: 

• 2 <= N <= 50

Example Input/Output 1: 

Input: 

3 

Output: 

0 0 1 0 0 

0 2 0 8 0 

3 0 0 0 7 

0 4 0 6 0 

0 0 5 0 0 

Example Input/Output 2: Input: 

5 

Output:

0 0 0 0 1 0 0 0 0

0 0 0 2 0 16 0 0 0

0 0 3 0 0 0 15 0 0 

0 4 0 0 0 0 0 14 0 

5 0 0 0 0 0 0 0 13 

0 6 0 0 0 0 0 12 0 

0 0 7 0 0 0 11 0 0 

0 0 0 8 0 10 0 0 0 

0 0 0 0 9 0 0 0 0

Source Code:

#include<stdio.h>

#include <stdlib.h>

int main()

{

int n,i,j,a=0,r=0,k,h;

scanf("%d",&n);

r=2*(2*n-2);

k=((2*n-1)/2)-1;

h=k+2;

for(i=0;i<2*n-1;i++)

{

    for(j=0;j<2*n-1;j++)

    {

        if(i==0)

        {

            if(j==k+1)

                printf("%d ",++a);

            else

                printf("0 ");

        }

        else

        {

            if(j==k+1)

                printf("%d ",++a);

            else if(j==h-1)

                printf("%d ",r--);

            else

                printf("0 ");

        }

    }

    if(i<n-1)

    {

        k--;

        h++;

    }

    else

    {

        k++;

        h--;

    }

    printf("\n");

}

}