Test 3, CSCI 130, Fall 2011

• Please answer each question fully, carefully and thoughtfully.
• No credit will be given for unreadable answers, please write neatly.
• Answer the questions in any order, but please number each answer clearly.
• Make sure that your name is on the test.

1. Casting and Coercion
   1. [3 points] What is type coercion? Give an code example.
   2. [3 points] What is type casting? Give an example.
   3. [4 points] 1 foot = 12 inches. Write a function which will, given the length of an item in inches, find the length in feet. Use the following function prototype.

      float InchesToFeet(int lengthInInches);
      	

2. If statements
   1. [4 points] Give the syntax for the if-then and if-then-else statements.
   2. [2 points] Show how a code block is used with an if-then statement.
   3. [4 points] Give the flow of control for the if-then-else statement.

3. While statements
   1. [2 points] Give the syntax for the while statement.
   2. [2 points] Show how a code block is used with a while statement.
   3. [2 points] Why is a code block used with a while statement? (Give example code, explain your example)
   4. [4 points] Give the flow of control for a while statement.

4. [6 points] State the conditions necessary to successfully construct a loop.

5. [5 points] Write a routine which takes a student's grade and returns the associated comment, given in the following table. Use the provided function prototype.

   Grade	Percent Score	Comment
   A	90% to 100%	Outstanding Work
   B	80% to 90%	Good Work
   C	70% to 80%	Average Performance
   D	60% to 70%	Poor Work
   F	Below 60%	Failure

   string GradeComment(char letterGrade);
       

   Over Please

6. [ 5 points] Write a function which, given a student's percentage score, returns the letter grade. Use the above table and the provided function prototype.

   char GetLetterGrade(float percentScore)
       

7. [4 points] Write a function which, given a string, will count the number of letters, numbers and other types of characters in the string. Use the provided function prototype.

   void CountCharTypes(string phrase, int & letters, int & digits, int & other);