C++ Program to Print Square With Diagonal Numbers Pattern

Write a C++ program to print the square with all zeros except the diagonal numbers pattern using for loop.

#include<iostream>
using namespace std;

int main()
{
	int rows;

	cout << "Enter Square with Diagonal Numbers Side = ";
	cin >> rows;

	cout << "Square with Numbers in Diaginal and Remaining 0's\n";

	for (int i = 1; i <= rows; i++)
	{
		for (int j = 1; j < i; j++)
		{
			cout << "0 ";
		}
		cout << i << " ";

		for (int k = i; k < rows; k++)
		{
			cout << "0 ";
		}
		cout << "\n";
	}
}
C++ Program to Print Square With Diagonal Numbers Pattern

It is another way of printing the square pattern with diagonal numbers and all the remaining items zeros in C++.

#include<iostream>
using namespace std;

int main()
{
	int rows;

	cout << "Enter Square with Diagonal Numbers Side = ";
	cin >> rows;

	cout << "Square with Numbers in Diaginal and Remaining 0's\n";

	for (int i = 1; i <= rows; i++)
	{
		for (int j = 1; j <= rows; j++)
		{
			if (i == j)
			{
				cout << i << " ";
			}
			else
			{
				cout << "0 ";
			}
		}
		cout << "\n";
	}
}
Enter Square with Diagonal Numbers Side = 9
Square with Numbers in Diaginal and Remaining 0's
1 0 0 0 0 0 0 0 0 
0 2 0 0 0 0 0 0 0 
0 0 3 0 0 0 0 0 0 
0 0 0 4 0 0 0 0 0 
0 0 0 0 5 0 0 0 0 
0 0 0 0 0 6 0 0 0 
0 0 0 0 0 0 7 0 0 
0 0 0 0 0 0 0 8 0 
0 0 0 0 0 0 0 0 9 

C++ program to print square with diagonal numbers pattern using a while loop

#include<iostream>
using namespace std;

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

	cout << "Enter Square with Diagonal Numbers Side = ";
	cin >> rows;

	cout << "Square with Numbers in Diaginal and Remaining 0's\n";
	i = 1;

	while (i <= rows)
	{
		j = 1;

		while (j <= rows)
		{
			if (i == j)
			{
				cout << i << " ";
			}
			else
			{
				cout << "0 ";
			}
			j++;
		}
		cout << "\n";
		i++;
	}
}
Enter Square with Diagonal Numbers Side = 12
Square with Numbers in Diaginal and Remaining 0's
1 0 0 0 0 0 0 0 0 0 0 0 
0 2 0 0 0 0 0 0 0 0 0 0 
0 0 3 0 0 0 0 0 0 0 0 0 
0 0 0 4 0 0 0 0 0 0 0 0 
0 0 0 0 5 0 0 0 0 0 0 0 
0 0 0 0 0 6 0 0 0 0 0 0 
0 0 0 0 0 0 7 0 0 0 0 0 
0 0 0 0 0 0 0 8 0 0 0 0 
0 0 0 0 0 0 0 0 9 0 0 0 
0 0 0 0 0 0 0 0 0 10 0 0 
0 0 0 0 0 0 0 0 0 0 11 0 
0 0 0 0 0 0 0 0 0 0 0 12 

This C++ program displays the square pattern of incremental diagonal numbers and all the remaining ones are zeros using the do while loop.

#include<iostream>
using namespace std;

int main()
{
	int rows;

	cout << "Enter Square with Diagonal Numbers Side = ";
	cin >> rows;

	cout << "Square with Numbers in Diaginal and Remaining 0's\n";
	int i = 1;

	do
	{
		int j = 1;

		do
		{
			if (i == j)
			{
				cout << i << " ";
			}
			else
			{
				cout << "0 ";
			}

		} while (++j <= rows);

		cout << "\n";

	} while (++i <= rows);
}
Enter Square with Diagonal Numbers Side = 14
Square with Numbers in Diaginal and Remaining 0's
1 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 2 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 3 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 4 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 5 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 6 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 7 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 8 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 9 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 10 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 11 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 12 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 13 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 14 

About Suresh

Suresh is the founder of TutorialGateway and a freelance software developer. He specialized in Designing and Developing Windows and Web applications. The experience he gained in Programming and BI integration, and reporting tools translates into this blog. You can find him on Facebook or Twitter.