Answered: hello, this problem is give some…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

hello, this problem is give some trouble about it?

my code

# Dictionary to store course prerequisites

course_prerequisites = {

"CS111": "None",

"CS141": "None",

"CS151": "None",

"CS211": "CS141, CS151",

"CS251": "CS211",

"CS261": "CS211",

"CS277": "None",

"CS377": "CS277",

"CS341": "CS211, CS251, CS261",

}

# Print the header

print("--------------------------------")

print(" UIC CS Track")

print("--------------------------------\n")

# Ask the user for a course name

course_name = input("Enter a subject abbreviation and course number (CS111 for example): ")

# Check if the course name is in the dictionary

if course_name in course_prerequisites:

prerequisites = course_prerequisites[course_name]

print(f"Prerequisites for {course_name}: {prerequisites}")

else:

print(f"Course {course_name} not found in the list of CS courses.")

# Goodbye message

print("\nThank you for using App!")

print("Closing app...")

UIC CS Track
-------
Enter a subject abbreviation and course number (CS111 for example): CS111
Prerequisites for CS111: None
LLLL
Thank you for using App!
Closing app...
------
m
UIC CS Track
Enter a subject abbreviation and course number (CS111 for example): CS341
Prerequisites for CS341: CS211, CS251, CS261
Thank you for using App!
Closing app...
----
UIC CS Track
---
---
Enter a subject abbreviation and course number (CS111 for example): CS377
Prerequisites for CS377: CS277
Thank you for using App!
Closing app..-

Expert Solution

Step 1: Providing the algorithm

1. Create a dictionary named course_prerequisites to store course prerequisites.
Initialize it with key-value pairs where keys are course names and values are prerequisites.

2. Print a header to indicate the start of the program.

3. Prompt the user to enter a course name (e.g., "CS111").

4. Read and store the entered course name in the variable course_name.

5. Check if course_name exists in the course_prerequisites dictionary:
a. If it exists:
- Retrieve the prerequisites for the entered course (course_prerequisites[course_name]).
- Split the prerequisites by commas and remove extra spaces.
- Check if the prerequisites list is ["None"]:
- If yes, print that there are no prerequisites for the course.
- If no, print the list of prerequisites.
b. If it does not exist:
- Print a message indicating that the course was not found in the list of CS courses.

6. Print a thank-you message and indicate the app is closing.

7. End of the program.

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