CMSC104, Fall 2006

Programming Project 1

Grade Calculator

Out: Thursday, October 19, 2006
Due: Thursday, October 26, 2006 before 11:59 p.m.

The Objective

This project is designed to give you practice writing a C program on your own. You also gain experience taking pseudocode you have written and writing the corresponding code. You should also practice the incremental programming technique we discussed in class.

The Task

Your job is to write a grade calculating program for CMSC104. You should use the pseudocode portion of your answer for question 2 of Homework 2. As in the pseudocode, you do not have to do any error checking of user input. In addition to printing the average, you should also determine the letter grade that corresponds to the numerical average based on the following scale: 
     90% <= a <= 100% 
     80% <= b <   90% 
     70% <= c <   80% 
     60% <= d <   70% 
      0% <= f <   60%
When figuring the letter grade, you should round the number up if the decimal portion is .5 and above.

Sample Output

linux2[14]% gcc -ansi -Wall proj1.c

linux2[15]% a.out

Welcome to the CMSC104 grade calculation program. This
program will calculate the final average and course
grade for a student in CMSC104. Each homework is
worth 4%, each project is worth 7% and each exam is
worth 20%.

Enter the homework 1 score: 100
Enter the homework 2 score: 80
Enter the homework 3 score: 100
Enter the project 1 score: 75
Enter the project 2 score: 90
Enter the project 3 score: 99
Enter the project 4 score: 100
Enter the exam 1 score: 92
Enter the exam 2 score: 80
Enter the exam 3 score: 81


With an average of 87.28%, your course grade is a B.

Thank you for using the grade calculation program!

linux2[16]% a.out

Welcome to the CMSC104 grade calculation program. This
program will calculate the final average and course
grade for a student in CMSC104. Each homework is
worth 4%, each project is worth 7% and each exam is
worth 20%.

Enter the homework 1 score: 100
Enter the homework 2 score: 50
Enter the homework 3 score: 75
Enter the project 1 score: 75
Enter the project 2 score: 70
Enter the project 3 score: 75
Enter the project 4 score: 75
Enter the exam 1 score: 80
Enter the exam 2 score: 70
Enter the exam 3 score: 65


With an average of 72.65%, your course grade is a C.

Thank you for using the grade calculation program!

linux2[17]%

Submitting the Program

Your program should be in a file called proj1.c.

Here is a sample submission command. Note that the project name starts with uppercase 'P'.

submit cs104_0401 Proj1 proj1.c

To verify that your project was submitted, you can execute the following command at the Unix prompt. It will show the file that you submitted in a format similar to the Unix 'ls' command.

submitls cs104_0401 Proj1