Hollow Square

Problem Statement

Input Format

An integer N representing the size of the square.

Output Format

Print the hollow square pattern.

Constraints

1 <= N <= 20

Sample Input

4

Sample Output

****
*  *
*  *
****

Explanation

Asterisks are printed only on the boundary, and spaces are printed inside.

Starter Code

#include <stdio.h>

int main() {
    int n;
    if (scanf("%d", &n) == 1) {
        // Write your code here
    }
    return 0;
}

Limits

• Time Limit: 1s
• Memory Limit: 256MB