cout << endl;
if (firstNum == 0 || firstNum < 0 || secondNum == 0 || secondNum < 0)
cout << “Both numbers must be positive.” << endl;
}
33.
switch (classStanding)
{
case ‘f’:
dues = 150.00;
break;
}
34. Suppose that we have the following variables:
double billingAmount;
2. Input the billing amount into the variable billingAmount.
4. Input the payment into the variable payment.
5. Determine the unpaid balance using the formula:
6. Determine the percent of the billing amount made by the customer:
if (billingAmount != 0.0)
7. Determine the credit or the penalty, and the unpaid balance including penalty, if any, using the
following if/else statement.
if (paymentPercent == 1.0)
{
credit = billingAmount * 0.01;
Chapter 5
2. i = 5 and temp = 48
4. 1 3 5 7
6. Sum = 90
8. Sum = 190
10.
int count = 0;
}
11. a. 20 *
12. 0 1 -1 1 -1 -3 6 5
13. Replace the while loop statement with the following:
while (response == ‘Y’ || response == ‘y’)
Replace the cout statement:
with the following:
24
19. Loop control variable: j
The initialization statement: j = 1;
22. a. ii
23. a. *
b. infinite loop
24.
sum = 0;
}
27.
0 – 24
25 – 49
29. a. both
25
d. while
30. There is more than one answer. One solution is:
#include <iostream>
using namespace std;
31. In a pretest loop, the loop condition is evaluated before executing the body of the loop. In a posttest
32. a. The loop is executed 5 times; Output: 55 50
b. The loop is executed 4 times; Output: 80 80
33. int num;
do
{
34. int i, value = 0;
26
value = value + i * i;
else if (i % 2 == 0 && i > 10)
value = value + i;
else
value = value – i;
}
cout << “value = ” << value << endl;
The output is: value = 200
35. int i = 0, value = 0;
do
{
if (i % 2 == 0 && i <= 10)
value = value + i * i;
36. There is more than one answer to this problem. One solution is:
do
{
cin >> number;
37. cin >> number;
while (number != -1)
{
38. cin >> number;
while (number != -1)
{
39. a.
number = 1;
while (number <= 10)
{
40. a.
int value = 3;
int i = 1;
while (i < 5)
{
41. a. 36 94 260
b. 4 20
42.
a.
1 1 1 1 1
b.
2 3 4 5
3 4 5
4 5
5
c.
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5
d.
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
e.
1
121
12321
1234321
44. 12
46. The execution of a break statement in a loop terminates the loop.
29
Chapter 6
1. a. false; b. true; c. true; d. true; e. false; f. false; g. true; h. false; i. true; j. true; k. false; l. false;
m. false; n. true
3. a. 18 b. 20.50 c. 87.20 d. 16.00 e. 1717.82 f. 2.80 g. 14.00 h. 11.16 i. 27.00
j. 20.00 k. 19.00 l. -5.00 m. 2.25 n. 4096.00 o. 0.01 p. 3.03
6. a. 10.00
8. a. 5
9. a. 2; double
10. In a C++ program, typically the function main appears before any other user-defined function. The
11. bool isWhitespace (char ch)
{
12. a. 4.00
13. a. (i) 72 (ii) -200
14. bool funcEx14(double x, double y, double z)
{
if (floor(x * y) == floor(z))
}
15. a. 385
16. 7
-17
17. double funcEx17(double x, double y)
}
18. a. –120
19. a. In a void function, a return statement is used without any value such as return;
20. a.
Function prototype: void func(int, int, double&, char&); //Line 6
31
(function func): starts at Line 19 and ends at Line 26
b.
Function call: Statements in Lines 13 and 15
func(s, t, d, ch); //Line 13
func(75, 8, d, ch); //Line 15
Formal parameters (function func): speed, time, distance, c
Actual parameters: s, t, d, ch (in Line 13)
75, 8, d, ch (in Line 15)
c.
Value parameters (function func): speed, time
Reference parameters (function func): distance, c
d.
Local variables (function main): s, t, d, ch
(function func): num
Global variable: temp
e. Named constant: RATE, STAR
21. a. A variable declared in the heading of a function definition is called a formal parameter. A variable
or expression used in a function call is called an actual parameter.
22. a. Take Programming I.
23. void funcEx23(int num)
{
if (num % 2 == 0)
}
24. void sumAvg(double x, double y, double z, double& sum,
double & avg, string& result)
{
}
25. void initialize(int& x, double& y, string& str)
{
x = 0;
32
26. void sumAvgResult(int n, int m, int& sum, double& avg)
{
int count = 0;
sum = 0;
}
27. 7, 0, 0
28. 6 10 20
29. #include <iostream>
using namespace std;
int secret(int, int);
void func(int x, int& y);
int main()
{
_17__ return 0;
}
int secret(int a, int b)
33
{
int d;
__5__ d = a + b;
30. a. The user input is shaded.
31. void trackVar(double& x, double y, double& z)
{
}
32.
34
Identifier
Visibility
in main
main
Y
local variables of main
Y
trackVar (function name)
Y
x (trackVar formal parameter)
N
y (trackVar formal parameter)
N
z (trackVar local variable)
N
33. 3 5
34.
Sample Run:
Line 9: In main: num1 = 10, num2 = 20
Before the statement in Line 9 executes, the variables are:
Line 9 produces the following line of output:
The statement in Line 10 calls the function funOne; control transfers to the function funOne. Before
the statement in Line 18 executes, the variables are:
After the statement in Line 18 executes, the variables are:
num1 10
num2 20
main
a
x12
funOne
z
num110
num220
main
35
Line 19 produces the following output:
Line 19: In funOne: a = 10, x = 12, and z = 22
After the statement in Line 20 executes, the variables are:
After the statement in Line 22 executes, the variables are:
Line 23 produces the following output:
After the statement in Line 23 executes, control goes back to the function main at Line 11. Before the
statement in Line 11 executes, the variables are:
a
x17
funOne
z
22
num110
num220
main
a
x17
funOne
z
22
num118
num220
main
num1 18
main
a
x12
funOne
z
22
num110
num220
main
36
35. stVar = 3, u = 3, x = 2
38. a. 69, 71.50
b. 51, 53.50
Chapter 7
1. a. true; b. false; c. true; d. false; e. false; f. true; g. true; h. true; i. false; j. false; \
2. a. enum flowerType {ROSE, DAISY, CARNATION, FREESIA, GARDENIA,
ALLIUM,TULIP, IRIS, SUNFLOWER, LILAC, ORCHID};
b. flowerType flower;
c. flower = TULIP;
d. flower = static_cast<flowerType>(flower + 1);
break;
case FREESIA:
cout << “Freesia”;
break;
case GARDENIA:
case SUNFLOWER:
cout << “Sunflower”;
break;
case LILAC:
cout << “Lilac”;
38
else if (str == “Carnation”)
flower == CARNATION;
else if (str == “Freesia”)
flower = FREESIA;
else if (str == “Gardenia”)
4. a. 4
b. GRAPE
5.
flowerType readIn()
{
string str;
flowerType flower = 0;
cin >> str;
else if (str == “Allium”)
flower = ALLIUM;
else if (str == “Tulip”)
flower = TULIP;
39
else if (str == “Iris”)
flower = IRIS;
else if (str == “sunflower”)
flower = SUNFLOWER;
else if (str == “Lilac”)
bir flower d == LILAC;
else if (str == “Orchid”)
flower = ORCHID;
else
cout << “Invalid flower name.” << endl;
return flower;
}
6.
void printflowerName(flowerType flower)
{
switch(flower)
{
case ROSE:
cout << “Rose”;
case GARDENIA:
cout << “Gardenia”;
break;
case ALLIUM:
cout << “Allium”;
cout << “Lilac”;
break;
case ORCHID:
cout << “Orchid”;
}//end switch
7. Because there is no name for an anonymous type, you cannot pass an anonymous type as a parameter
to a function and a function cannot return an anonymous type value. Also, values used in one
8. enum quadrilateralType {SQUARE, RECTANGLE, RHOMBUS, TRAPEZIOD,
9. The statement in Line1 1 and 2 should be:
10. The program does not use the statement: using namespace std;
There are several errors in this code. The correct code is:
#include <iostream> //Line 1
11. The statement in Line 2 should be:
using namespace std; //Line 2
12. Replace the statement in Line 2 with the following:
using namespace mySpace //Line 2
Replace the statement in Line 12 with the following:
<< num << endl; //Line 14
13. Either include the statement:
14. The statement in Line 2 should be: #include <cmath>
15. a. Sammer Vucation
16. a. Temporary > Storage