Read and follow the directions below carefully. Pay attention to any clarifications I announce or put on the board during the exam.

    Use the blue exam booklet. Do not tear out any pages from it -- cross them out if you must (don't waste time erasing). Please do all your scratch work in the blue book also. Do not do any work on this sheet and do not hand in this sheet. In answering the questions, be sure to include an explanation of how you arrived at your answer -- that's the only way I'll be able to give you any partial credit if the answer is wrong. But don't burn up a lot of your precious time writing long explanations either.
    You will have a blue or red exam. The people on each side of you must have the opposite color from you. This is a closed-book, no calculators exam lasting 65 minutes.

Question 1.
    What does the following bit of code produce? Carefully show all blank spaces where they occur using the  symbol. ( This question is not hard, but it is tricky. )

       int i = 37;
       cout << "<< i is:" << i << endl << "That's all << endl;" << "all done";
    

Question 2.
    Describe what each of the following four input statements do, or if any of them do not work, what's wrong with them. Assume m and n are integer variables with initial values 3 and 4, respectively. Assume that the user types in a sequence of one or more pairs of characters, a 6 followed by a blank, as needed, when the cin's require input.

       A: cin >> n;
       B: cin >> 5;
       C: cin >> m >> n;
       D: cin >> n >> n;

Question 3.
    Write a while statement that involves the following:

• An integer m with initial value 10.
• An integer n with initial value 20.
• An integer constant NN equal to 30.
• A logical expression for the while test that succeeds as long as m is less than NN and n is greater than NN/2.
• A body containing three statements. The first prints out the m and n values, explaining what's being printed, the second statement increases m by 2 and the third reduces n by 1.

Question 4.
    What is the value of the following logical expression?

   (('a' > 'm') || ("dog" < "mouse")) && (false != true)

Question 5.
    Write three versions of a function fun1.

1. The function prototype.
2. The function definition.
3. A call to the function using the integer variable n and the number 37.34. The real variable rr should be defined and used to receive the returned value.

• fun1 takes two arguments, an integer and a real number.
• fun1 returns a real number.
• The body of fun1 simply returns the sum of the two arguments.

Question 6.
    Just what is the problem with the following while loop? (Hint: I gave this example in lecture on Monday, Oct. 30th)

       int i = 0;
       while ( i < 7);
          {
           cout << i << endl;
           i = i + 1;
          }

Question 7.
    Create a for loop that does the following:

• The integer i is declared before the for statement.
• In the for statement (not the body) i is initialized to 10.
• The for loop test in the for statement is that i must be greater than 0 (zero).
• i is decreased by 2 in the for statement at each step.
• The body of the for statement contains two simple output statements that output the strings "I'm a for loop." and "I'll quit eventually".
• Also answer this question: How many times is the pair of output statements printed?

       int g = 7;
       void fn(int arg)
          {g = arg + g; 
          }
       void main ()
          {int g = 10; // point A, what are the values of g?
           fn(g); // point B, what are the values of g inside the function fn
           		  // and what is the value of arg during this call to fn?
          }