Question

4. Write a program that asks the user for a positive integer no greater than 15. The program should then display a square on the screen using the character 'X'. The number entered by the user will be the length of each side of the square. For example, if the user enters 5, the program should display the following: XXXXX XXXXX XXXXX XXXXX XXXXX

c++

Answer 1

It seems to be a problem with category pattern printing. Here you would like to print the pattern of SQUARE with the help of 'X' alphabet.

For simplicity purposes, I have divided the solution into parts.

Let's start :)

PART ONE: UNDERSTANDING THE REQUIREMENT

We need to write a C++ program that takes input less than 15 and print a square on the screen using the character X.

This is a problem of pattern printing. I will be giving you the step by step approach to solve this problem.

PART TWO: APPROACH

The basic idea will be counting how many characters we need to print.

On analysis, it is found that

when input = 4,

Output =

This means 16 characters

and when input = 5

output =

This means 25 characters,

Now we have got a formula, that the output is always the square of input number.

Now we can think of implementing this as a 2-D Matrix problem or nested loop problem.

PART THREE: IMPLEMENTATION

1. Before jumping to the coding part, please adhere to the following points.

2. Please read code comments at all the important sections of the program.

3. Please try to understand the solution by visualizing as 2-D matrix problem or nesting loops problem

*******************CODE*************************

#include <iostream>
using namespace std;

int main() {
  
   cout<<"Please provide the size of square?"<<endl;
   //user input
   int input;
   while(1){
   cin>>input;
   if (input > 15)
       {cout<<"INVALID INPUT: VALID INPUT IS LESS THAN 15"<<endl;
       continue;
      
       }
   else
   break;
   }
  
  
   for(int i=0;i<input;i++)
   {
       for(int j=0;j<input;j++)
       {
           //Print X input number of times
               cout<<"X";
       }
       //Print other iteration in new line
      
       cout<<endl;
}
  
   return 0;
}

**************************CODE*****************************

PART FOUR: SAMPLE INPUT AND OUTPUTS

INPUT VALIDATION:

This part checks whether the input is less than 15. if not, user is again prompted for input.

PATTERN PRINTING:

INPUT: 5

OUTPUT:

INPUT = 20

OUTPUT:

PART FIVE: MY PERSONAL RECOMMENDATION

As the problem statement wants to print a square pattern, try to print the characters with a space character. Please see the below-updated snaps

INPUT: 5

OUTPUT:

This figure looks like a better square. :)

Anyways it was really cool to discuss this much detail about this pattern.

I hope it helps and Please don't forget to thumbs up if it helped you.

Keep Learning Keep Chegging :)

Happy Coding

********************COMPLETE**********************