Drawing a square

Question

Guys, how can I draw a square in a console window using a nested For loop and the (*) symbol? Your help will be highly appreciated.

Answer 1

For readability it's better to do it with 'if-else' construction.
if (age <= 22)
{
Console.Write("You're younger than {0}.", age);
}
else
{
Console.Write("You're older than {0}.", age);
}

With ternary will look like that:
Console.Write((age <= 22) ? "You're younger than {0}." : "You're older than {0}.", age);

Answer 2

// in java a very simple one looks like this not sure if you can relate to any of it.

//initalization of i outside for loop you dont have to do this you can initalize it inside the for loop

int i=0;

// first loop comparison..

for(;i < 5;++i){

//initalization of variable inside nested loop..

for(int j=0;j < 10;++j){

//prints the stars on the same line..

System.out.print("*");}

//println method creates a new line after the nested loop has compleated..

System.out.println();
}

//repeats untill the first for loop returns false

Answer 3

Assume this is the square:
* * * *
* *
* *
* * * *

You need 2 nested 'for' loops.
The outer will make new lines (rows). And the inner should draw the columns.
Since this is a square, it's obvious that the top and bottom sides are the same. So you can print the top once before the loops and once after them, or to put logic inside the outer loop to print the symbols and spaces in the right moment.
There are many ways to do it.
But you should try it by yourself. What's the point if I solve it for you, right?

Answer 4

Ok, here is my variant:
https://code.sololearn.com/chKdelUwj2Ea/?ref=app

Answer 5

if the statement evaluates to true the first statement is executed, if it evaluates to false the second statement is executed

Answer 6

where are the lines

Answer 7

can you publish the code in playground or paste it here? so I'll be able to play around with it and find a solution

Answer 8

Here's my C++ version.
I've compensated for the space between lines and out in some input validation as well.

If you really want I can make A C# version as well.
Depends how many upvotes I get... :p

https://code.sololearn.com/cEye8mi55i0i/?ref=app

Answer 9

Thanks, David. I think I see the error I made.

My code was:

for(I=0; I<=10; I++)
{
//Print the top of the square
Console.Write("*");
break;

//Print the sides
for(j=0; j<1; j++)
{
Console.Write(* *);
break;
}
}

//Output was:

*
* *
*
* *
*
* *

This is not what I want it to do.

Answer 10

you mean the ternary operator

Answer 11

a>b ? Console.Write ("a is larger") : Console.Write ("a is not larger");

Answer 12

I've putted some comments.
If you wonder why I'm using 'size - 1', it's to avoid the unnecessary spaces at the end of the lines.

Answer 13

you don't need the "if"

Answer 14

just for the record you don't put parentheses on the first part of the ternary operator, or any part for that matter your code should look exactly like this:

Age <= 21 ? Console.WriteLine ("Not eligible for college.") : Console.WriteLine ("Eligible for college.");

only the writeline() method should get () and not the "Age <= 21"

could that be your mistake?

Answer 15

k np good night and don't let the c# bugs bite
😄

Answer 16

lol!!!! you're crazy. So I tried it again today and let me just do try it in the playground then I'll post the code here.

Please wait......

Answer 17

Ternary operator is helpful, when you need to print a short string, or assign value to variable, where 'if-
else' can't do better than taking unnecessary space.

// Example 1
int num = 5;

// using if-else
if (num % 2 == 0)
{
Console.Write("even");
}
else
{
Console.Write("odd");
}

// using ternary
Console.Write((num % 2 == 0) ? "even" : "odd");

// Example 2 - ternary
string answer = (num % 2 == 0) ? "even" : "odd";

Console.Write("The number is {0}.", answer);

// Example 3 - ternary
int yourAge = 30;
int age = 25;
string ageStat = (yourAge <= age) ? "younger" : "older";

Console.Write("You're {0} than {1}.", ageStat, age);

Answer 18

You can start over, without reset.
And yes. It's good to take the course again. But note that SL is just a little from here - a little from there thing. To understand the material you'll need to solve a lot of code problems.
For example, you can practice everything in www.hackerrank.com.

Answer 19

I'm coding since 2013, but started more serious, and learned 80% of all I know, in 2016-2017 with Java as main language. Now I'm on OOP and currently I'm practicing with recursion. For example to simulate the behavior of n count of nested for-loops.

Answer 20

Boris, I can do it but it would result in long lines of code e.g. Console.write line("*********"); etc etc. I tried doing it yesterday before deciding to post the question here because there's clearly something that I'm not doing right.