Question

In C# I need to write a program that prints in the console application the last digit of a particular number "n".

For example:

n	Result
21	1
139	9
4	4

 

Answer 1

1. Declare two variables (n and lastDigit).
2. Read the user input from the console. (int.Parse(Console.ReadLine());).
3. Find the last digit of the number by the formula: int lastDigit = n % (10); (Use modular division - the operator % in C#).
4. Print the result on the console (Console.WriteLine(lastDigit));)

---

using System;

class LastDigit
{
    static void Main()
    {
        Console.WriteLine("Please write your number:");
        long n = long.Parse(Console.ReadLine());

        long lastDigit = n % (10);  //or int or double - whatever numeral data type suits you
        Console.WriteLine("The last digit of your number {0} is: {1}", n, lastDigit);
    }
}