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C# Program to Perform Division with Error Handling using Try-Catch

This C# program prompts the user to input two numbers and performs a division operation. The program handles potential errors, such as division by zero, using a try..catch block to ensure that any exceptions are gracefully handled, providing feedback to the user instead of crashing the program.

When the user inputs the two numbers, the program attempts to perform the division and display the result. If an error occurs (for example, if the second number is zero), a try..catch block catches the exception and displays an appropriate error message to the user. This ensures that the user is informed of the issue without the program terminating unexpectedly.

The try block is used to enclose the code that might cause an exception, while the catch block captures the exception and allows the program to continue running. By using this method, we ensure that common runtime errors (like division by zero) do not interrupt the program flow.



Group

C# Flow Control Basics

Objective

Write a C# program to prompt the user for two numbers and display their division. Errors should be caught using "try..catch".

Example C# Exercise

 Copy C# Code 
using System;

class Program
{
    static void Main()
    {
        // Prompt the user for the first number (dividend)
        Console.Write("Enter the first number: ");
        double num1 = Convert.ToDouble(Console.ReadLine()); // Convert input to double
        
        // Prompt the user for the second number (divisor)
        Console.Write("Enter the second number: ");
        double num2 = Convert.ToDouble(Console.ReadLine()); // Convert input to double

        try
        {
            // Attempt to perform the division
            double result = num1 / num2;
            Console.WriteLine($"The result of {num1} / {num2} is: {result}"); // Output the result
        }
        catch (DivideByZeroException ex)
        {
            // Catch division by zero errors
            Console.WriteLine("Error: Cannot divide by zero.");
        }
        catch (FormatException ex)
        {
            // Catch errors in case of invalid input (not numbers)
            Console.WriteLine("Error: Invalid input. Please enter valid numbers.");
        }
        catch (Exception ex)
        {
            // Catch any other general exceptions
            Console.WriteLine($"An unexpected error occurred: {ex.Message}");
        }
    }
}

 Output

//Example 1 (Valid Division):
Enter the first number: 10
Enter the second number: 2
The result of 10 / 2 is: 5

//Example 2 (Division by Zero):
Enter the first number: 10
Enter the second number: 0
Error: Cannot divide by zero.

//Example 3 (Invalid Input - Non-numeric):
Enter the first number: 10
Enter the second number: abc
Error: Invalid input. Please enter valid numbers.

//Example 4 (General Error):
Enter the first number: 10
Enter the second number: 5
Error: An unexpected error occurred: Not defined

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