C++ Program to Print Diamond Number Pattern

Write a C++ program to print the diamond number pattern using for loop.

```#include<iostream>
using namespace std;

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

cout << "Enter Diamond Number Pattern Row = ";
cin >> rows;

cout << "Diamond Number Pattern\n";

for(i = 1; i <= rows; i++)
{
for(j = 1; j <= rows - i; j++)
{
cout << " ";
}
for(k = 1; k <= i * 2 - 1; k++)
{
cout << k;
}
cout << "\n";
}

for(i = rows - 1; i > 0; i--)
{
for(j = 1; j <= rows - i; j++)
{
cout << " ";
}
for(k = 1; k <= i * 2 - 1; k++)
{
cout << k;
}
cout << "\n";
}

return 0;
}```

This C++ example is another way of printing the diamond pattern of numbers.

```#include<iostream>
using namespace std;

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

cout << "Enter Diamond Number Pattern Row = ";
cin >> rows;

cout << "Diamond Number Pattern\n";

for(i = 1; i <= rows; i++)
{
for(j = 1; j <= rows - i; j++)
{
cout << " ";
}
for(k = i; k >= 1; k--)
{
cout << k;
}
for(l = 2; l <= i; l++)
{
cout << l;
}
cout << "\n";
}

for(i = rows - 1; i > 0; i--)
{
for(j = 1; j <= rows - i; j++)
{
cout << " ";
}
for(k = i; k >= 1; k--)
{
cout << k;
}
for(l = 2; l <= i; l++)
{
cout << l;
}
cout << "\n";
}
return 0;
}```
``````Enter Diamond Number Pattern Row = 9
Diamond Number Pattern
1
212
32123
4321234
543212345
65432123456
7654321234567
876543212345678
98765432123456789
876543212345678
7654321234567
65432123456
543212345
4321234
32123
212
1``````