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C#

Posted by Samuel Savaria
Samuel Savaria
4,809 Points

Feedback on my programs (Quiz).

I am doing the 4 side projects that were proposed at the end of C# Basics. I am looking for any type of feedback from the community: How to follow the conventions, improve readability, optimize the program, etc..

This is the second suggestion, the Quiz. The program has to ask the user 3 multiple-choice questions or true/false questions. It also needs to print the score at the end. My main issue with this program is it's length and repetitiveness. I know we will learn how to call other methods and classes later, as well as how to create objects, but I would like to know if there is a way to re-use the same bit of code with my current knowledge. Thanks.

using System;

class Program
{
    static void Main()
    {
      var good = 0;
      Console.Write("Enter \"a\" \"b\" \"c\" or \"d\" for multiple choice questions and \"true\" or \"false\" for true/false questions.\nPress any key to continue.\n");
      Console.ReadLine();

      //Question 1
      Console.Write("How is the front of a ship called?: \na)Forefront\nb)Bow\nc)Stern\nd)Keel\n");
      while (true)
      {
        //Receive input
        var entry = Console.ReadLine();
        //Give feedback
        if (entry.ToLower() == "b")
        {
          Console.Write("Well done! ");
          good += 1;
          break;
        }
        else if (entry.ToLower() == "a" || entry.ToLower() == "c" || entry.ToLower() == "d")
        {
          Console.Write("Wrong. The front of a ship is called the bow. ");
          break;
        }
        else
        {
          Console.Write("Please enter a valid input. \n"); 
        }
      }

      Console.Write("Press any key to continue.\n");
      Console.ReadLine();

      //Question 2
      Console.Write("How is the back of a ship called?: \na)Forefront\nb)Rudder\nc)Stern\nd)Keel\n");
      while (true)
      {
        //Receive input
        var entry = Console.ReadLine();
        //Give feedback
        if (entry.ToLower() == "c")
        {
          Console.Write("Well done! ");
          good += 1;
          break;
        }
        else if (entry.ToLower() == "a" || entry.ToLower() == "b" || entry.ToLower() == "d")
        {
          Console.Write("Wrong. The back of a ship is called the stern. ");
          break;
        }
        else
        {
          Console.Write("Please enter a valid input. \n"); 
        }
      }

      Console.Write("Press any key to continue.\n");
      Console.ReadLine();

      //Question 3
      Console.Write("True or False? A Snow has 3 masts. \n");
      while (true)
      {
        //Receive input
        var entry = Console.ReadLine();
        //Give feedback
        if (entry.ToLower() == "false")
        {
          Console.Write("Well done! ");
          good += 1;
          break;
        }
        else if (entry.ToLower() == "true")
        {
          Console.Write("Wrong. A Snow has 2 masts. ");
          break;
        }
        else
        {
          Console.Write("Please enter a valid input. \n"); 
        }
      }

      Console.Write("Press any key to continue.\n");
      Console.ReadLine();

      //Print the score
      Console.Write("You score is: " + good + "/3!\n");
    }
}

1 Answer

Steven Parker
Steven Parker
231,172 Points
Steven Parker
Steven Parker
231,172 Points

Sure, you can easily compact this code.

One common method is to identify places in the code where the same thing is done over and over (such as checking answers and giving a response) and creating a function to do those things which you can call from multiple places.

You'll see this and other methods for optimizing your code explained and illustrated in later lessons.