CS 1044 Test 1 Form A Key            Fall 1998

 Q  A	Explanation
 1  2	8/5 + 3 == 1 + 3 == 4
 2  3	18.0/6.0 + 6.0 == 3.0 + 6.0 == 9.0
 3  3	11%4 + 1 == 3 + 1 == 4
 4  4	7.1*3 - 1 == 21.3 - 1 == 20.3
 5  2	9%4 == 1; assign to float, so value is 1.0
 6  2	16/2.5 == 6.4 (computed as a double)
 7  1	15 - 5.8 == 9.2; truncated to 9 when assigned to an int
 8  1	
 9  2	There is no ** arithmetic operator in C++
10  1	
11  1	This is an equality comparison -- syntactically correct but useless.

        For questions 12-15:  

        infile >> uno >> uno;			// reads values 12 and 13
        infile.ignore(100, '\n');		// skips to beginning of second line
        infile >> deuce >> trey;		// reads values 7 and 20
        infile.ignore(100, '\n');		// skips to beginning of third line
        infile >> deuce >> trey;		// reads values 9 and 28
        infile.ignore(100, '/n');		// skips to end of input file;
						// '/n' should be '\n'
        if (!infile.eof()) infile >> quad;	// reads nothing
12  2	
13  5	
14  2	
15  4	

        For questions 16-17:
        ifile >> i1;				// reads value 432
        ifile.get(ch1);				// reads value 'b'
        ifile.get(ch2);				// reads tab '\t' after 'b'
16  3	
17  6

        For questions 18-19:  the program reads three values per pass,
        computing the sum of those three values and printing the sum.  
        So, it will print the following lines of output:
            9
           17
            7
           16
18  4	
19  6	

        For questions 20-22:
        ifile >> ch1			// reads '4'
              >> i1			// reads 32
              >> ch2			// reads 'b'
              >> ch3;			// reads '1'  (>> skips over whitespace)
20  1	
21  5	
22  5	

        For questions 23-28:
        fred >> anInt1 			// reads 43
             >> anInt2			// reads -21
             >> aFloat1 		// reads 17.9
             >> anInt3;			// reads 19
        fred.ignore(80, '\n');		// skips to beginning of second line
        fred >> aFloat2 		// reads 2.4
             >> anInt3;			// reads 1
        fred.ignore(4, '\n');		// skips ".8 -", not to next line 
        fred >> anInt2;			// reads 12
23  2	
24  3	
25  4	
26  10	
27  4	
28  7	

29  2	0 + 1 < 1 is false
30  1	-(-7) >= 7 is true
31  1	Components evaluate ato: F && F || T; no parentheses, so the AND is
        evaluated before the OR; we get F || T which is true
32  2	!true == false
33  3	"!==" is a syntax error
34  2	2*A >= B is true, so go into first if-clause;
        D is reset to 1; C < B +2*D is false now, so go to else-clause
35  7	The else goes with the second if; the code is equivalent to:
           if (score >= 95) {
              if (rank <= 5)
                 cout << "Nice job!";
              else
                 cout << "good job!";
           }
36  3	i%2 == 0 if and only if i is even, so only the second if has
        any effect
37  8	
38  1	goes to default
39  4	goes to case 3 but then falls through to case 5
40  4