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Handling Division with 'else' in C#

This exercise focuses on implementing conditional logic in C# using the else statement. We will create a program that asks the user for two numbers. If the second number (the divisor) is not zero, the program will perform the division and display the result. Otherwise, it will use the else clause to display "I cannot divide", ensuring that division by zero is safely handled.

Using else improves code readability and structure by providing a clear alternative path when a condition is not met. This approach is fundamental for writing robust programs that can handle various user inputs gracefully.



Group

C# Flow Control Basics

Objective

The objective of this exercise is to develop a C# program that asks the user for two numbers and uses an else statement to handle division safely. If the second number is not zero, it will display the division result; otherwise, it will display "I cannot divide".

Write a version of the previous program using 'else'. The program should ask the user for two numbers, and if the second number is not zero, it will display their division. Otherwise, it will display 'I cannot divide'.

Example C# Exercise

 Copy C# Code 
// First and Last Name: John Doe

using System;

namespace SafeDivisionWithElse
{
    class Program
    {
        // The Main method starts program execution
        static void Main(string[] args)
        {
            // Declare two variables to store user input
            double numerator, denominator;

            // Prompt the user to enter the first number (numerator)
            Console.Write("Enter the first number: ");
            numerator = Convert.ToDouble(Console.ReadLine()); // Read input and convert to double

            // Prompt the user to enter the second number (denominator)
            Console.Write("Enter the second number: ");
            denominator = Convert.ToDouble(Console.ReadLine()); // Read input and convert to double

            // Check if the denominator is zero
            if (denominator == 0)
            {
                // Display a message indicating that division is not possible
                Console.WriteLine("I cannot divide");
            }
            else
            {
                // Perform the division and display the result
                double result = numerator / denominator;
                Console.WriteLine("The result of {0} / {1} is {2}", numerator, denominator, result);
            }

            // Wait for user input before closing the console window
            Console.ReadKey(); // Keeps the console open until a key is pressed
        }
    }
}

 Output

//Example 1 (Valid division):
Enter the first number: 30  
Enter the second number: 6  
The result of 30 / 6 is 5  

//Example 2 (Division by zero):
Enter the first number: 15  
Enter the second number: 0  
I cannot divide

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