How to print this star pattern in C?

Question

I would like to print the below pattern, where user enters n and m (4 and 6) the outside boundary should be made up with stars and inside should be filled with circles.

******    ******    ******    ******    
*oooo*    *oooo*    *oooo*    *oooo*
*oooo*    *oooo*    *oooo*    *oooo*
*oooo*    *oooo*    *oooo*    *oooo*
*oooo*    *oooo*    *oooo*    *oooo*
******    ******    ******    ******    

******    ******    ******    ******    
*oooo*    *oooo*    *oooo*    *oooo*
*oooo*    *oooo*    *oooo*    *oooo*
*oooo*    *oooo*    *oooo*    *oooo*
*oooo*    *oooo*    *oooo*    *oooo*
******    ******    ******    ******    

******    ******    ******    ******    
*oooo*    *oooo*    *oooo*    *oooo*
*oooo*    *oooo*    *oooo*    *oooo*
*oooo*    *oooo*    *oooo*    *oooo*
*oooo*    *oooo*    *oooo*    *oooo*
******    ******    ******    ******    

******    ******    ******    ******    
*oooo*    *oooo*    *oooo*    *oooo*
*oooo*    *oooo*    *oooo*    *oooo*
*oooo*    *oooo*    *oooo*    *oooo*
*oooo*    *oooo*    *oooo*    *oooo*
******    ******    ******    ******    

The code I have written is as below. What I am doing wrong?

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

int main(void)
{
    int n,i,j,k,m,n1;
    printf("enter table size and enter square size");
    scanf("%d %d", &n, &n1);

    for (i = 0; i < n; i++) {
        for (j = 0; j < n1; j++) 
        {
            for ( k = 0; k < n; k++) 
            {
                for ( m = 0; m < n1; m++) 
                {
                    {
                        if(i==0 || i==n-1)
                        {
                            printf("*");
                        }
                        else if(j==0 || j==n-1)
                        {
                            printf("*");
                        }
                        else
                        {
                            printf("o"); 
                        }
                    }
                }
                printf(" ");
            }
            printf("\n");
        }
        printf("\n");
    }

    system("pause");
    return 0;
}

Answer 1

The corrected code is

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

int main(void)
{
    int n,i,j,k,m,n1;
    printf("enter table size and enter square size");
scanf("%d %d", &n, &n1);

for (i = 0; i < n; i++) {
    for (j = 0; j < n1; j++) 
    {
        for ( k = 0; k < n; k++) 
        {
            for ( m = 0; m < n1; m++) 
            {
                {
                    if(j==0 || j==n1-1)
                    {
                        printf("*");
                    }
                    else if(m==0 || m==n1-1)
                    {
                        printf("*");
                    }
                    else
                    {
                        printf("o"); 
                    }
                }
            }
            printf(" ");
        }
        printf("\n");
    }
    printf("\n");
    }

    system("pause");
    return 0;
}

Your index variables does the following:

    |----------------n----------------------|
    |--m--|
-   *******  ******* ******* ******* *******
|   *o ...
|   *o ...
j   *o ...
|
|
-

So basically you must print * when j is in first row or last row of each square or when m is in first row or last row of the square (n1).

Hope this helps