Pre Lab 11b CS 122L 5 Points Total Objectives Verify

Pre Lab 11bcs 122l 5 Points Totalobjectives Verify That Your Code F

Pre-Lab 11b CS 122L - 5 Points Total Objectives · Verify that your code from lab 11a is correct Deliverables · Submit your pre-lab answers in Bblearn under the Lab 1 pre-lab assignment area prior to the start of class. The goal of this pre-lab is to verify that you have correctly implemented the functions that were assigned to you in Lab 11a. To get started, download the prelab11b.m file from Bblearn. Move it to the same directory as your Lab11a folder. If you have been following instructions, that folder should be located in the cs122 directory.

After your have moved the file, cd into your cs122 directory and add the cs122 folder and the Lab11a folder to your path. If you are using the addpath function, then this will require two separate function calls. Once you have added the files to the path, simply enter the following command into the MATLAB console: runtests(‘prelab11b.m’) This will run all of the tests with your code. Note that the tests will ask you to input several values. Enter appropriate values as requested or your tests will fail.

Once the tests have finished, there will be a report that tells you which tests passed and which failed. If a test fails, you should be able to tell from the name of the test which function is causing the problem. Once you have identified the issue, fix it, and then run the tests again. When you pass all tests, copy and paste the output into a word document.

Paper For Above instruction

The pre-lab assignment for CS 122L, labeled as Pre Lab 11b, is designed to verify the correctness of students’ implementation of specific functions from Lab 11a. The primary objective of this exercise is to ensure that students' code functions as intended and meets the specified requirements. This is achieved by running automated tests, which are facilitated through a MATLAB script named prelab11b.m.

To begin, students are instructed to download the prelab11b.m file from the course's Blackboard Learning system (Bblearn) and place it in the same directory as their existing Lab11a folder. This organizational step is essential for the subsequent steps, which involve adding these directories to MATLAB’s search path. Proper directory placement ensures MATLAB can locate and execute the scripts and functions necessary for testing.

Once the files are correctly positioned, students must navigate into their cs122 directory using MATLAB’s command window. They need to add both the cs122 folder and the Lab11a folder to the MATLAB search path, accomplished via the addpath command. This step guarantees that MATLAB recognizes the location of all relevant scripts and functions necessary for testing. An important aspect here is that these directories are added through separate addpath calls, emphasizing careful directory management.

After setting the correct paths, students run the command runtests(‘prelab11b.m’). This command triggers a series of automated tests embedded within the prelab11b.m script. The tests evaluate each function implemented in Lab 11a to confirm whether they produce the correct outputs for a variety of input values. During testing, MATLAB prompts the user to input specific values as required by the scripts. Accurate input is critical—incorrect inputs can cause the tests to fail, making debugging more challenging.

The results of these tests are outputted as a report, indicating which tests passed or failed. The report helps students identify which particular functions may be problematic, based on the test names. When a test fails, students are advised to examine the associated function, identify the errors, and make the necessary corrections. After modifications, the tests should be rerun until all tests pass successfully.

Upon successful completion, where all tests are passed, students should copy the test output and include it in a Word document for submission. This process provides a systematic and automated way to verify code correctness, thereby fostering good coding practices and debugging skills.

Conclusion

The pre-lab 11b exercise is an essential step for students to validate and troubleshoot their coding efforts in a controlled, automated manner. It emphasizes the importance of organized project structure, proper directory management, and diligent testing. Successful completion of this pre-lab demonstrates that students have adequately implemented their Lab 11a functions, ensuring readiness for subsequent practical or theoretical coursework in computer science and programming.

References

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