Example: Square Frame

Write a program that takes a positive integer n and draws on the console a square frame with a size of n * n.

Video: Square Frame

Watch this video lesson to learn how to print a square frame on the console using nested loops: https://youtu.be/LS2uqvggfSA.

Hints and Guidelines

We can solve the problem in the following way:

• We read from the console the number n.
• We print the upper part: first a + sign, then n-2 times - and in the end a + sign.
• We print the middle part: we print n-2 rows, as we first print a | sign, then n-2 times - and in the end again a | sign. We can do this with nested loops.
• We print the lower part: first a + sign, then n-2 times - and in the end a + sign.

Here is an example implementation of the above idea with nested loops:

Testing in the Judge System

Test your solution here: https://judge.softuni.org/Contests/Practice/Index/512#4.