C# Program - Print Floyd's Triangle

Floyd's triangle is named after Robert Floyd and it is a right-angled triangular array of natural numbers. It is created by filling the rows of the triangle with consecutive natural numbers, starting with 1 at the top.

1
2  3
4  5  6
7  8  9  10
11 12 13 14 15 

Example:

In the below example, a method called FloydTriangle is defined. It requires one parameter to pass as number of rows in the triangle and prints the given number of rows of Floyd's triangle.

using System;

class MyProgram {
  //method for floyd triangle
  static void FloydTriangle(int n) {
    int value = 1;
    for(int i = 1; i <= n; i++) {
      for(int j = 1; j <= i; j++) {
        Console.Write("{0} ", value); 
        value++;
      }
      Console.WriteLine(); 
    }
  }  
  static void Main(string[] args) {
    FloydTriangle(7);
  }
}

The above code will give the following output:

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