Enter size: 7
*******
------*
*****-*
*---*-*
*-***-*
*-----*
*******

Enter size: 9
*********
--------*
*******-*
*-----*-*
*-***-*-*
*-*---*-*
*-*****-*
*-------*
*********

Enter size: 17
*****************
----------------*
***************-*
*-------------*-*
*-***********-*-*
*-*---------*-*-*
*-*-*******-*-*-*
*-*-*-----*-*-*-*
*-*-*-***-*-*-*-*
*-*-*-*---*-*-*-*
*-*-*-*****-*-*-*
*-*-*-------*-*-*
*-*-*********-*-*
*-*-----------*-*
*-*************-*
*---------------*
*****************

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

int main(void) {

int size;
int row, column;

// Obtain input
printf("Enter size: ");
scanf("%d",&size);

row = 1;
while (row <= size) {

    column = 1;

    while (column <= size) {

        if ((row % 2 == 1) && (column % 2 == 1)) {
            printf("*");
        } else if (row == 1) {
            printf("*");
        } else if ( (row == 3) && (column != size - 1) ) {
            printf("*");
        } else if ( (column == size - 2) && (row != 2) && (row != size - 1) ) {
            printf("*");
        } else if ( (column == 3) && (row != 2) && (row != size - 1) && (row != 4) ) {
            printf("*");
        } else if ( (column == (size + 1)/2) && (row % 2 != 0) ) {
            printf("*");
        } else if ( (row % 2 != 0) && (column % 2 != 0) ) {
            printf("*");
        } else if (column % size == 0) {
            printf("*");
        } else if ((column == 1) && (row != 2)) {
            printf("*");
        } else if (row == size) {
            printf("*");
        } else {
            printf("-");
        }

        column++;

    }
    printf("n");

    row++;

    }

    return EXIT_SUCCESS;
}