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C# program to print Floyd's triangle

Here, we are going to learn how to print Floyd's triangle in C#?
Submitted by Nidhi, on October 03, 2020

Here, we will Floyd's triangle using nested loops on the console screen.

Program:

The source code to print Floyd's triangle is given below. The given program is compiled and executed successfully on Microsoft Visual Studio.

//C# program to print Floyd's triangle
using System;

class MathEx
{
    static void Main(string[] args)
    {
        int outer = 1;
        int inner = 1;
        int num   = 1;
        int rows  = 0;

        Console.Write("Enter the number of rows: ");
        rows = int.Parse(Console.ReadLine());

        for (; outer <= rows; outer = outer + 1)
        {
            for (inner = 1; inner < outer + 1; inner++)
            {
                Console.Write(num + " ");
                num = num + 1;
            }
            Console.WriteLine();
        }
    }
}

Output:

Enter the number of rows: 8
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 32 33 34 35 36
Press any key to continue . . .

Explanation:

Here, we created a class MathEx that contains a Main() method, In the Main() method we declared 4 variables outer, inner, num, and rows initialized with 1,1,1 respectively. Then read the value of rows from the user.

for (; outer <= rows; outer = outer + 1)
{
    for (inner = 1; inner < outer + 1; inner++)
    {
        Console.Write(num + " ");
        num = num + 1;
    }
    Console.WriteLine();
}

In the above code, we print Floyd's triangle, here the outer loop is executed 1 time for each row and the inner loop is executed to print elements of the row.

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