find the nth hexagonal number in csharp

To find the nth hexagonal number in C#, we can use the formula:


main.cs
H(n) = n(2n-1)
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Here is the implementation of the formula in C#:


main.cs
public static int GetHexagonalNumber(int n)
{
    return n * (2 * n - 1);
}
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To use this method and get the nth hexagonal number, we can call it as follows:


main.cs
int n = 10; //nth term
int hexagonalNumber = GetHexagonalNumber(n);

Console.WriteLine(hexagonalNumber); //Output: 190
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This should output 190, which is the 10th hexagonal number.