More Examples of Multiway if Statements

Example

Let’s consider part of a program that assigns a letter grade—A through F—to an integer exam score ranging from 0 to 100. Grades are assigned as follows:

• A 90 to 100
• B 80 to 89
• C 70 to 79
• D 60 to 69
• F Below 60

We offer five different solutions to this problem. Each one uses the variables

int  score;
char grade;

and assumes that score contains an integer ranging from 0 to 100. All solutions are correct, but not all are good, as we will see.

Solution 1

The first solution clearly indicates the range of scores for each letter grade. Run the program with various values of the score.