gistfile1.txt

#include <iostream.h>

void main()
{
	int num;
	cout << "Enter number: ";
	cin >> num;
	for (int row = 1; row <= num; row++)
	{
		for (int col = 1; col < 2 * num; col++)
		{
			if (col < row)
			{
				cout << col << " ";
			}
			else if (col > 2 * num - col && col < 2 * num - row)
			{
				cout << row << " ";
			}
			else if (col > 2 * num - row)
			{
				cout << 2 * num - col << " ";
			}
			else
			{
				cout << row << " ";
			}
		}
		cout << endl;
	}

	for (int row = num - 1; row >= 1; row--)
	{
		for (int col = 2 * num - 1; col >= 1; col--)
		{
			if (col < row)
			{
				cout << col << " ";
			}
			else if (col > 2 * num - col && col < 2 * num - row)
			{
				cout << row << " ";
			}
			else if (col > 2 * num - row)
			{
				cout << 2 * num - col << " ";
			}
			else
			{
				cout << row << " ";
			}
		}
		cout << endl;
	}
}