CSC 160 Extra Credit Problems for Midterm
Assigned Mar 24, Due SUNDAY April 2

For students who received less than 80% on the midterm exam, up to 3 points may be added to your midterm score (up to a maximum of 80%) for each program listed here that is successfully done. That means for each problem, include its purpose, contract, three examples, a skeleton, the actual Scheme function, and the test file.

1. Develop a function to return the average of 3 exam scores.

2. Develop a function that will find the perimeter of a square given the length of one of its sides.

3. Develop the function, total-inches. The function consumes a length represented by two numbers: the first a number of feet, and the second a number of inches. The function produces the total length in inches. (Hint: There are 12 inches in a foot.)

4. Develop the function self-description which takes a name and returns the description: My name is SOME-NAME and I am a CSC 160 student.

5. (Note: This question uses some stuff from Chapter 4. To figure it out, you will either have to go ahead on your own, or be creative.) Develop the function My-Grade-Is-B?, which returns true for any grade between 80 and 89, and false otherwise.

Last Modified: 3/26/06