Exercise - Use the Visual Studio Code debugger to isolate and fix logic issues in a C# console application

  • 14 minutes

In this challenge exercise, you need to use the Visual Studio Code debugger tools to isolate and fix the issues that are preventing the MakeChange method from successfully balancing the till. Once your application is updated, you need to verify your results.

Specification

The following specification requirements apply to the simulated transactions:

  • top-level statements simulate transactions using randomly generated item costs.
  • top-level statements generate random values for itemCost in the range 2 - 49.
  • top-level statements simulate 100 transactions.

The reported transaction output must include:

  • A record of 100 attempted transactions.
  • Instances of a message stating: "Could not make transaction: InvalidOperationException: Not enough money provided to complete the transaction."
  • Instances of a message stating: "Could not make transaction: InvalidOperationException: The till is unable to make change for the cash provided."
  • A reported till value that's equal to the expected till value.

Debug the application

Use the following steps to isolate and fix the logic issues:

  1. Configure the debug environment.

  2. Run the application in a debug session.

  3. Use the Visual Studio Code debugger tools to isolate and fix the logic issues.

  4. Save the updated the application.

Check your work

To validate that your updated application produces the expected results when implementing the specified simulation requirements, complete the following steps:

  1. Open the Program.cs file in the Visual Studio Code Editor.

  2. Configure the application variables to meet the simulated transaction requirements in the Specification section.

  3. Run your updated application.

  4. Verify that your application achieves the following output requirements:

    • The transactions report includes a record of 100 attempted transactions.

    • The transactions report includes a reported till value that's equal to the expected till value.

    • The transactions report includes instances of the following messages:

      Could not make transaction: InvalidOperationException: Not enough money provided to complete the transaction.

      Could not make transaction: InvalidOperationException: The till is unable to make change for the cash provided.

Congratulations if you succeeded in this challenge!