Tests a clean way of printing star matrices

star_matrix.c

#include <stdio.h>

/** Header file */
typedef struct {
    int rows;
    int columns;
} StarMatrixMetadata;

void print_star_matrix(StarMatrixMetadata metadata);

/** source file */

static int is_at_matrix_edges(StarMatrixMetadata metadata, int r, int c) {
    return c == 0  || c == (metadata.columns - 1) || r == 0 || r == (metadata.rows - 1);
}

void print_star_matrix(StarMatrixMetadata metadata)
{   
    for (int r = 0; r < metadata.rows; r++)
    {
        printf(" \n");
        for (int c = 0; c < metadata.columns; c++)
        {   
            if (is_at_matrix_edges(metadata, r, c))
            {
                printf("* ");
                continue;
            }
            printf("  ");
        }
    }
}

/** user code */
int main(){

   StarMatrixMetadata metadata;
    
    printf("Enter number of rows \n");
    scanf("%i",&(metadata.rows));
    printf("Enter number of columns \n");
    scanf("%i",&(metadata.columns));
    
    print_star_matrix(metadata);

   return 0;
}