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";
}
}```

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 ``````