1.

while (i < target)

{
…
i++
}

What data type should i and target be declared as?

float

double

char

int

2.

An assignment statement

changes the value of a variable

can only be used to define a constant

can not be combined with a declaration

is used to determine if an expression is true or false

3.

What directive is used to bring the contents of a header file that contains code such as function prototypes into your program before it is compiled? Credit will only be given for indicating the directive, not for any specific use of it.

4.

You have the following code:

string name;

cout << "Enter your name : ";

cin >> name;

If a user enters "Mary Smith" at the prompt for a name, what will name contain after the cin statement?

Not enough information to answer

Mary

Mary Smith

5.

Indicate if each expression evaluates to true or false.

int a = 10;

int b = 7;

int c = 21;

a < b
! (a < b)
a == b
a < b && c < b
a == b || c > 0

6.

You want to determine if a variable named num contains a value between 1 and 100 (inclusive).

Which expression below should be used?

num == 1 && num == 100

num == 1 || num <= 100

num >= 1 || num <= 100

num >= 1 && num <= 100

7.

The statement on line 43 is being executed and the value of x is -1.

Both parts of the expression (x >= 2) and (x <= 10) will be evaluated.

True

False

8.

How many times will the statement k = i *j; in the code below be executed?

int i, j, k;

for (i = 0; i < 10; i++)

for (j = 0; j < 10; j++)

k = i *j;

1 time

10 times

81 times

100 times

9.

double processValue (int val);

int value = 23;
double result = processValue (value);

For the code shown above, what is the

name of the formal parameter

name of the argument

name of the variable assigned the value returned from processValue

return type of the processValue function

10.

int processValue (int val)
{
if (val > 100)
return val – 100;
else if (val < 0)
return 0;
else
return val;
}

int num = 123;
int result = processValue (num);

After the call to processValue, what is the value of the variable num?

0

23

123

it is undefined

11.

const int MAX = 7;

int main (int argc, char *argv[])
{
int count = 0;
while (count <= MAX)
{
cout << count << endl;
count++;
}
}

The name of the loop control variable for the code above is .

This loop will execute times.

12.

Rewrite the while loop in the code above to be a for loop.

13.

After this statement is executed, what value does answer hold?

double answer = 6/12;

0

.20

.50

2

14.

A and B are boolean expressions. Indicate all of the conditions which will cause (A || B) to evaluate to true.

A is true, B is true

A is false, B is false

A is false, B is true

A is true, B is false

15.

A and B are boolean expressions. Indicate all of the conditions which will cause (A && B) to evaluate to false.

A is true, B is true

A is false, B is false

A is false, B is true

A is true, B is false

16.

What statement most accurately describes the output of this loop?

for (int i = 2; i < 99; i++)
{
if (i % 2 == 0)
cout << i << " ";
}

all of the even numbers between 2 and 99

all of the odd numbers between 2 and 99

all of the even numbers between 2 and 98

all of the odd numbers between 2 and 98

17.

The expressions (i % 2 == 0) and (! (i % 2)) will produce equivalent results.

True

False

18.

What is the output of the following code?

int count = 1;

while (count <= 10);
{
cout << count << " " << endl;
}

1 2 3 4 5 6 7 8 9

1 2 3 4 5 6 7 8 9 10

None, this code will not run.

This code will produce an infinite loop.

19.

double val;
if (val)
{
…
}

Which of the following values could be assigned to the variable val and result in the body of the if statement being executed?

1

66

-2

-1

all of the above

20.

What keyword in a switch statement covers all possibilities not handled by the cases?

break

all

default

there is no way to do this

21.

In order to set the field width for output, you use which i/o manipulator?

setprecision

setw

setwidth

showpos

22.

What data type allows you to directly store the results of comparisons? For example, you want to store the result of the expression x < 100.

23.

You have received this warning when compiling a program:

What have you done and how should you fix it?

24.

const int SENTINEL = -1;
int count = 0;
int sum = 0;
int num;
double average;

cout << "Enter a value: (or -1 to quit): " << endl;
cin >> num;
while (num != SENTINEL)
{
cout << "Enter a value: (or -1 to quit): " << endl;
cin >> num;
count++;
sum += num;
}

average = sum/count;

The code above is part of a working program and has a logic error. Describe it, and indicate how to fix it.

(Remember that only partial code is shown here. The answer is not that this is an incomplete program and that a main function is needed.)

25.

You are writing a program to determine sales commission, where the following commission rates are used:

sales	rate
< 10,000	3%
> 10,000 and <= 15,000	5%
> 15,000	7%

Write the constant declarations that will be needed in the code when calculating the commission. You can write these as define directives or as constant variables, but in either case, you must use standard and proper syntax.

(This is not asking to write a program or any code that will use these constants. Show only the constant declarations.)