The Principal Skinner Case Study

You are a programmer for the Springfield School District. The district has decided to implement +- grading and it has issued these specifications.

• 90 or higher is an A
• 80 or higher is an B
• 70 or higher is an C
• 60 or higher is an D
• 59 or lower is an F

No + or - is applied to an F. The + and - go as follows. The percentage is rounded to the nearest integer, so an integer is the input. The rules for + and - are as follows.

• If the last digit is a 0, 1 or a 2, the grade gets a -.
• If the last digit is 7, 8 or 9, the grade gets a +.
• In all other cases, there is no modifer.

Since we want to avoid the wrath of larry litigator alligator. we will test all cades to provide ourselves with proper CYA.