C++ Program to Print Square of Left Decrement Numbers Pattern

Write a C++ program to print square of left decrement numbers pattern using for loop.

#include<iostream>
using namespace std;

int main()
{
	int rows;

	cout << "Enter Square of Left Dec Numbers Rows = ";
	cin >> rows;

	cout << "Square of Decrement Numbers from Left Side\n";

	for (int i = rows; i >= 1; i--)
	{
		for (int j = i; j < rows; j++)
		{
			cout << j << " ";
		}
		for (int k = rows - i; k < rows; k++)
		{
			cout << rows << " ";
		}
		cout << "\n";
	}
}

This C++ program displays the square pattern of decrement numbers from left side using a while loop.

#include<iostream>
using namespace std;

int main()
{
	int rows, i, j, k;

	cout << "Enter Square of Left Dec Numbers Rows = ";
	cin >> rows;

	cout << "Square of Decrement Numbers from Left Side\n";
	i = rows;

	while (i >= 1)
	{
		j = i;
		while (j < rows)
		{
			cout << j << " ";
			j++;
		}

		k = rows - i;
		while (k < rows)
		{
			cout << rows << " ";
			k++;
		}

		cout << "\n";
		i--;
	}
}

Enter Square of Left Dec Numbers Rows = 9
Square of Decrement Numbers from Left Side
9 9 9 9 9 9 9 9 9 
8 9 9 9 9 9 9 9 9 
7 8 9 9 9 9 9 9 9 
6 7 8 9 9 9 9 9 9 
5 6 7 8 9 9 9 9 9 
4 5 6 7 8 9 9 9 9 
3 4 5 6 7 8 9 9 9 
2 3 4 5 6 7 8 9 9 
1 2 3 4 5 6 7 8 9