CSharp - Write program to Format Numbers

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Requirements

You will use the ToString method to get nicely formatted numeric output.

Control the decimal places, rounding, thousands separation, and so on.

Hint

In the format strings, N means thousands separation is required, and N2 and N0 denote the number of decimal places in the output.

Demo

using System;

class Program// w w  w  . j  a va2  s .c om
{
    static void Main(string[] args)
    {
        // Some money amounts and a number 
        double amount = 1234.56;
        double anotherAmount = 789;
        int wholeNumber = 1234567;

        // Formatted outputs 
        Console.WriteLine(amount.ToString("N2"));
        Console.WriteLine(anotherAmount.ToString("N2"));
        Console.WriteLine(wholeNumber.ToString("N0"));
    }
}

Result