COSC 1550 – Introduction to Programming
Test Two
Name _______________
Multiple Choice
Circle
the letter of the statement that bests
answers/completes each question. Each
question is worth three points.
1.
Which one of the following statements concerning
arithmetic operators is correct?
a)
The division operator is a unary operator.
b)
The division operator applies only to integer values.
c)
The operands of the remainder operator must be integers.
d)
The effects of the unary minus and the addition operators
are the same.
2.
Which one of the following statements concerning the
type of an arithmetic expression is correct?
a)
If even one operand in an arithmetic expression is of
type int, the result of the expression is of type int.
b)
If all operands in the expression are of type float, the
result is of type float.
c) If
only one operand in a mixed expression is of type float, the resulting type of
the expression cannot be determined.
d)
If an arithmetic expression includes the remainder
operator, the type of the entire expression is integer.
3.
Which one of the following statements concerning the
operation of the following if statement is correct?
if(A==B)
{
first
statements
}
else
{
second
statements
}
a)
The first statements are executed only if A is equal to
B.
b)
The second statements are executed only if A is equal to
B.
c)
Both the first statements and the second statements are
executed only if A is equal to B.
d)
Both the first statements and the second statements are
executed only if A is not equal to B.
4. Which one of the following
statements regarding the switch statement is not correct?
a) It provides for multiple paths through a program, depending on the
value of a variable.
b) If the value of the variable is equal to a case value, the statement(s)
associated with that value is executed.
c) If the value of the variable is not equal to any case value, the
statement(s) associated with the default: option is executed.
d) If the value of the variable is equal to a case value, but there
are no statements associated with that value, no statements are executed and the switch statement is ended.
5. The setprecision and setw
commands allow the program to
a) change the way that the data is stored.
b) format the way that data is displayed.
c) convert from one the data type to another.
d) determine the number of decimal positions used in a calculation.
6. In a conditional expression
of an if statement, which one of the following operators is used to represent
the logical AND?
a) &&
b) ||
c) ##
d) !!
7. The
_________ causes a program to wait until information is typed at the keyboard
and the Enter key is pressed.
a. Input
device
b. cin
object
c. cout
object
d. Preprocessor
8. The character array Company[12] can hold
a. Eleven
characters and the null terminator
b. Thirteen
characters
c. Twelve
characters
d. Twelve
characters and the null terminator
9. When
the final value of an expression is assigned to a variable, it will be
converted to:
a. The
smallest possible data type
b. The
largest possible data type
c. The
data type of the variable
d. The
data type of the expression
10. The
cin member function, __________, reads an entire line of text, until the
[Enter] key is pressed.
a. >>
b. getline()
c. line()
d. input()
11. Which of the following will read a string
into the array char Names[20] ?
a. cin
<< Names;
b. cin
Names;
c. cin
>> Names[20];
d. cin
>> Names;
12. When a
relational expression is false, it has the value _____.
a. one
b. zero
c. zero,
one, or minus one
d. less
than zero
13. When
an if statement is placed within the conditionally-executed code of another if
statement, this is known as:
a. complexity
b. overloading
c. nesting
d. validation
14. The _____ operator is used in C++ to
represent equality.
a. =
b. ><
c. !!
d. ==
15. The scope
of a local variable is
a) for the duration of the entire
program.
b) from the time it is defined
until the end of the program.
c) from the time it is defined
until the end of the block in which it is defined.
d) from the beginning of the
program until the end of the block in which it is defined.
16. The statement cout << setw(4)
<< num4 << " ";
a. Allows
four positions for the value in the variable num4
b. Outputs
"setw(4)" before the value in
the variable num4
c. Would
use setw(10) to output the value in the variable Num10
d. Inputs
up to four characters stored in the variable num4
17. The
stream manipulator, ____________, forces cout to print the digits in
fixed-point notation.
a. setprecision(2)
b. setw(2)
c. fixed
d. setfixed(2)
18. To write data to a file, you define an
object of this data type.
a. inputFile
b. ifstream
c. fstream
d. ofstream
19. Which
one of the following statements correctly closes the file with a stream name of
dataFile?
a. dataFile.close();
b. close.dataFile();
c. dataFile.close;
d. close.dataFile;
20. Assuming
outFile is a file stream object and number is a variable, which statement
writes the contents of number to the file associated with outFile?
a. write(outFile,
number);
b. outFile
>> number;
c. outFile
<< number;
d. number
>> outFile
21. Which
one of the following statements is true regarding the operation of the
setprecision stream manipulator?
a. When
used with the fixed stream manipulator, setprecision(3) means 3 significant
digits will display.
b. When
used with the fixed stream manipulator, setprecision(3) means 3 decimal digits
will display.
c. When
used with the setw stream manipulator, setprecision(3) means 3 significant
digits will display.
d. When
used with the setw stream manipulator, setprecision(3) means 3 decimal digits
will display.
22. If
you intend to place a block of statements within an if statement, you must use
__________ around the block.
a. parentheses
b. square
brackets
c. quotation
marks
d. curly
braces
23. When
a program lets the user know that an invalid choice has been made, this is
known as
a. input
validation
b. output
correction
c. compiler
criticism
d. output
validation
24. The
default section of a switch statement performs a similar task as the _______
portion of an if/else if statement.
a. conditional
b. break
c. trailing
else
d. cast
25. What will the following program segment
display?
int funny = 7, serious =
15;
funny = serious % 2;
if (funny != 1)
{
funny = 0;
serious = 0;
}
else if (funny == 2)
{
funny = 10;
serious =
10;
}
else
{
funny = 1;
serious = 1;
}
cout << funny
<< " " << serious
<< endl;
a. 7 15
b. 0 0
c.
10
10
d. 1
1
26. What will the following program display?
#include
<iostream.h>
void
main(void)
{
int a = 0, b = 2, x = 4, y = 0;
cout << (a == b) <<
" ";
cout << (a != b) << "
";
cout << (b <=x) <<
" ";
cout
<< (y > a) << endl;
}
a.
0 1 1 0
b.
0 0 1 0
c.
1 1 0 1
d.
1 0 0 1
Problems
The
following questions are problems that require some type of short answer. Please follow the instructions in each
question to complete. Each answer is
worth two points.
Assume the following declarations in a C++ program:
int
a = 2, b = 3, c = 15, d = 7;
float
x = -3.5, y=6.5, z = 11.25;
What values will be computed by the following arithmetic
statements? (show your work for possible
partial credit).
27. c/d%a
28. (c+b)/a-d
29. y – z * ( a – b )
30. –d * x + y
31. static_cast<int>(z)% b * ((1.5 +y)
– (z – 0.25))
Find and
explain the errors, if any, in the following C++ statements. Look carefully since these can have multiple errors
and the errors can be syntax errors or logic errors.
32. if (fee >= $10)
cout << "\nThis
is a high fee" << \n;
else
cout << "\nThis
fee is ok" << endl
33. switch (Option)
{
case ==1: cout << "Option 1 chosen"
<< endl;
case ==2: break;
cout
<< "Option 2 chosen" << endl;
case ==3; cout << "Option 3
chosen" << endl;
break;
default: cout << "Not a valid
option" <<endl;
}
34. if
(score < 60)
cout << "Your grade is an F\n";
if (score < 70)
cout
<< "Your grade is an D\n";
if (score < 80)
cout
<< "Your grade is an C\n";
if (score < 90)
cout
<< "Your grade is an B\n";
else;
cout
<< "Your grade is an A\n";
35. Given the following C++ code, what will
be displayed?
int age = 32;
char sex = ‘F’;
if (age <= 25 || (age <= 35
&& sex == ‘M’))
cout << "You
are a high risk driver" <<
endl;
else if ((age <=35 && sex
== ‘F’) || (age <=45 && sex == ‘M’))
cout << "You
are a medium risk driver" <<
endl;
else cout << "You are a
low risk driver" << endl;
36. Given
the following C++ code, what will be displayed?
int
plan = 2;
cout
<< "Your insurance plan includes:" << endl;
switch
(plan)
{
case
1: cout << "No
deductible" << endl;
case
2: cout << "$10
prescription co-pay" << endl;
case
3: cout << "$20
doctor visit copay" << endl;
break;
default: cout << "No emergency room benefit"
<< endl;
}
37. Given
the following C++ code, what will be displayed?
float
C = 5;
float
F = 9 / 5 * C +32;
cout
<< "The Fahrenheit value of "
<< C << " is " << F << endl;