Can this program be improved to print a hollow square?

Question

I mean, can we improve the looping?
https://code.sololearn.com/cJKUZr7XwDXo/?ref=app

Answer 1

No need to put character in an array, just use 2 loop, and inside those 2 loops, use Conditionals.

Link to lesson:
https://www.sololearn.com/learn/C/2923/?ref=app

//use OR (||) between conditions as any of these conditions need to be true for placing star

Answer 2

● run 2 loops from 0 to n, and think it like a matrix in which you can use condition to put "*" for rowNumber=0, rowNumber=n, columnNumber=0, columnNumber=n else print a space " "
● moving to next line in each iteration of outer loop using "\n"

Answer 3

Gaurav Agrawal I had thought of it, but how do I put a character in an array? Should I use 'putchar' ? If yes, how?

Answer 4

YUGABDH PASHTE I mean, to print a solid square, we use a single nested loop like this.....
https://code.sololearn.com/cV8mgnszagkm/?ref=app
Can we use a similar loop for a hollow square?

Answer 5

https://code.sololearn.com/cj24jL6h3etd/?ref=app
Try this one you have to give len of side of square

Answer 6

Isn't it's like your code already doing it? What else you want to do with it?

Answer 7

What is "return 0" used for? Code runs even without it.

Answer 8

It returns 0 to calling function
As in my code I have return type as void so it's working even if you don't write return 0. When you have return type as int u suppose to write return 0
As calling function expecting int as return value.