printing_patterns.c

/* Code Explanation:

n = 2

2 2 2
2 1 2
2 2 2

*/




#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>

int main() 
{

    int n;
    scanf("%d", &n);
  	int size = 2 * n - 1;
    int a[size][size];
    int start = 0, end = size - 1;
    
    while (n != 0) {
        for (int i = start; i <= end; i++) {
            for (int j = start; j <= end; j++) {
                if (i == start || i == end || j == start || j == end)
                    a[i][j] = n;
                else
                    a[i][j] = n - 1;
            }
        }
        ++start;
        --end;
        --n;
    }

    for (int i = 0; i < size; i++) {
        for (int j = 0; j < size; j++)
            printf("%d ", a[i][j]);
        printf("\n");
    }
    
    return 0;
}