Design A Program To Let Users Make Selections

Design a program that permits the user to select which

Design a program that permits the user to select which

During the quarter, CS105 students would like to know what grade they would receive based on all assignments and exams that have so far been submitted and graded. The program should allow the user to select which assignments and exams have been submitted, enter their scores, and then calculate the percentage grade and corresponding letter grade. The program must write this information to a file and inform the user via a message box. Additionally, the user should be able to read and display the contents of the file. The interface should utilize CheckBoxes for assignment selection, TextBoxes for score input, and buttons for calculate, write, and read actions. The program should include two key functions: one to calculate the numerical grade and another to convert that grade to a letter grade. Form controls should appropriately use properties such as Visible to enhance user experience.

Paper For Above instruction

The development of an academic grading program for CS105 students exemplifies an application of fundamental programming concepts such as function implementation, scope management, user interface controls, file handling, and user communication mechanisms. The outlined project entails creating an interactive Windows Forms application that allows students to select graded assignments via CheckBoxes, input scores, and receive a calculated overall grade expressed as a percentage and a letter grade. The application further supports persistent data storage through file writing and reading, and dynamically updates its interface to guide user interactions seamlessly.

At its core, the program's logic hinges on several key functions that encapsulate critical calculations. The primary function computes the weighted numerical grade based on input scores and their respective weights. This involves iterating over selected assignments, accumulating their weighted contributions, and dividing by total weights to obtain the overall percentage. The second function converts this percentage grade to a letter grade following established academic scales, ensuring clear evaluation standards. Such modularization enhances readability, maintainability, and scalability of the software.

The user interface design adopts a sequential, intuitive workflow aligned with the sample output sequence. It starts with the student selecting completed assignments via CheckBoxes and entering associated scores in TextBoxes. Upon clicking the "Calculate Grade" button, the program invokes the grading functions to determine the percentage and displays it formatted as a percentage string in a designated TextBox. Next, clicking the "Write Grades To File" button writes the computed data into a file, with a MessageBox confirming successful storage, thereby providing immediate user feedback. The "Read Grades From File" button then displays the stored information in a multiline, read-only TextBox with scrollbars to facilitate review.

File operations are handled using System.IO StreamWriter and StreamReader objects, following best practices for resource management and error handling. The application ensures data robustness by validating inputs before calculations and managing exceptions gracefully. The form's visibility controls and dynamic property adjustments provide a clean and focused user experience, hiding or showing elements based on context to prevent clutter.

This project demands proficiency in implementing functions, managing scope, handling files, and designing user interfaces that are both functional and user-friendly. Adhering to naming conventions, using constants for fixed values, and applying proper formatting for numerical output ensure code clarity and professionalism. The assignment underscores the importance of modular thinking and thoughtful UI design, ultimately culminating in a comprehensive tool that simplifies grading workflows while reinforcing core programming skills.

References

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