Final

Question 1

C++ not only supports OOP but also supports other programming styles. T or F

Answer 1

T

Question 2

In C++ the variables Alpha, ALPHA and AlphA are the same identifier. T or F

Answer 2

F

Question 3

In C++ the compiler will infer the type intended for a variable from the context in which the variable occurs. T or F

Answer 3

F

Question 4

A C++ variable declaration includes a name and data type. T or F

Answer 4

T

Question 5

A C++ declaration is a definition that also allocates storage for an identifier’s value (or function’s body etc.). T or F

Answer 5

T

Question 6

C++ uses only / / for comments. T or F

Answer 6

F

Question 7

Code, within the same block, after a return or a call to the exit function, will not be executed. T or F

Answer 7

T

Question 8

It is legal to replace the prototype
double totalCost(int numberParam, double priceParam);
with the more terse, alternate form
double totalCost(int, double); T or F

Answer 8

T

Question 9

Extensive use of global variables is a satisfactory replacement for the difficulties of parameter passing with functions. T or F

Answer 9

F

Question 10

A variable declared outside any function is said to be a local variable. T or F

Answer 10

F

Question 11

Consider two blocks, one within another. If an identifier is declared as a variable in the inmost of these two blocks, one can access this variable from the outer block. T or F

Answer 11

F

Question 12

Given the declaration
int x = 0;
The following expression causes a divide by zero error:
(x == 0) || (2/x < 1); T or F

Answer 12

F

Question 13

In a while loop, the boolean expression is executed before each execution of the loop body. T or F

Answer 13

T

Question 14

A break statement is used in loops only. T or F

Answer 14

F

Question 15

When a loop is nested inside another loop, a break terminates the outermost loop of the nested loop structure. T or F

Answer 15

F

Question 16

Curly braces are required around a single statement contained in a control structure. T or F

Answer 16

F

Question 17

The range of values for an unsigned int variable is from about -4 billion to +4 billion. T or F

Answer 17

F

Question 18

In C++, which of the following is a legal identifier?

a) 9xyz
b) @Xyz
c) X+yz
d) xy_z
e) a and d

Answer 18

D

Question 19

Pick the word that is not a C++ keyword out of the following list.

a) while
b) boolean
c) double
d) if
e) none of the above

Answer 19

B

Question 20

Which of the following types is not built into the C++ language:

a) bool
b) real
c) short
d) long
e) double

Answer 20

B

Question 21

An l-value is

a) an expression that can be only be placed on the left of any operator such as +, * , /, etc.
b) assigned a value
c) can never have a value fetched from it
d) is designed for use by a left-handed person

Answer 21

B

Question 22

The value of the expression 20.0 * (9/5) + 32.0 is

a) 68.0
b) 52.0
c) incorrect expression so there is no value
d) 32.0
e) incorrect expression , the / should be %

Answer 22

B

Question 23

A call to a C++ function is
a) The name of the function followed by empty parentheses.
b) The name of the function followed by any number of arguments, regardless of the
number of parameters in the definition.
c) The name of the function followed by a number of arguments not greater than the number
of parameters in the definition.
d) The name of the function only.
e) none of the above

Answer 23

C

Question 24

A void function
a) performs some action and returns a value
b) performs some action but does not return a value
c) is a statement
d) call is written much like a call to a value returning function but is terminated with a
semicolon.
e) may return a value but is not required to have one.

Answer 24

B

Question 25

A definition of a variable outside any function is called a

a) local function definition
b) global variable definition
c) global function header
d) global function definition
e) local variable definition

Answer 25

B

Question 26

Where can you not declare a variable in a C++ program?

a) Within the parameter list of a function definition
b) Within the block of a void function.
c) Within the argument list of a function call
d) Within a block nested within another block
e) Within the block of a value returning function.

Answer 26

C

Question 27

Assume this code fragment is embedded in an otherwise correct and complete program. What should be the output from this code segment?
{
for( int i = 0; i < 10; i++)
{
.. .
}
cout << i << endl;
}
a) 10
b) 9
c) 0
d) The variable i is undefined in this scope, so this should not compile
e) none of the above

Answer 27

D

Question 28

What is the difference between executing the return 0; statement and its rough equivalent, a call to the exit(0); function, or the difference between return 1; and exit(1);?

a) These are very nearly equivalent anywhere they are encountered.
b) These are very different if encountered in a function other than main();.The exit function terminates the program, returning control to the operating system, whereas return only terminates the function, returning control to the calling function.
c) Both these return control to the free store manager by way of the exception controller, sending the argument as an error code.
d) none of the above

Answer 28

B

Question 29

Given the following include directive (to get the declaration for the pow function from the math library):
#include
Now make these declarations:
double base = 2, exponent = 3, power = 4;
Which of the following are syntactically correct invocations for the pow function?
a) power = pow(base, exponent);
b) pow(power, base, exponent);
c) pow(base, exponent) = power;
d) base = pow(exponent, power);
e) both a and d

Answer 29

E

Question 30

Which control construct repeats a sequence of statements zero or more times?

a) while statement
b) do-whilestatement
c) switch statement
d) if-elsestatement
e) none of the above

Answer 30

A

Question 31

Which of the following is not true of the || operator?

a) It has two operands.
b) It can have one operand.
c) It is the logical OR operator.
d) It returns true if either operands is true.
e) It uses short circuit evaluation.

Answer 31

B

Question 32

In a switch statement, when a break statement is encountered, an immediate transfer of control is made to

a) the default case of the switch statement
b) agotostatement
c) the else clause
d) the statement beyond the end of the switch statement.
e) none of these

Answer 32

D

Question 33

In distinguishing an expression as true or false, C++ sees which of the following as true?

a) true
b) Thecharacter’F’
c) 1
d) Anynon-zerovalue
e) all of the above

Answer 33

E

Question 34

Which of the following determines the operator that is processed prior to another operator?

a) Operator precedence
b) Whether the operator is an arithmetic operator
c) None of these determine the order in which operators are processed.
d) none of the above
e) all of the above

Answer 34

A

Question 35

Which of the following loop statements is guaranteed to iterate the body of the loop at least once?

a) while(control) body;
b) do body while(control);
c) for (initialize; test; update) body;
d) none of the above

Answer 35

B

Question 36

If this code fragment were executed in an otherwise correct and complete program, what would the output be?
int a = 3, b = 2, c = 5
if (a > b)
a = 4;
if ( b > c)
a = 5; else
a = 6;
cout << a << endl;
a) 3
b) 4
c) 5
d) 6
e) None of the above, the cout statement belongs to the else and so is skipped.

Answer 36

D

Question 37

If the following code fragment is executed in an otherwise complete and correct program, which expression will be executed?
x = 0;
if (x = 12)
yes_statement;
else
no_statement;
a) The no_statement will be executed because x is not 12.
b) The statement has incorrect syntax so will not compile at all.
c) x=12 is illegal in the Boolean expression of an if statement.
d) The yes_statement will be executed.

Answer 37

D

Question 38

Given the function, and the main function calling it: What is the output of the following code if you omit the ampersand (&) from the first parameter, but not from the second parameter? (You are to assume this code is embedded in a correct function that calls it.):
#include 
using namespace std;
void func(int & x, int & y)
{
int t = x;
x = y;
y = t;
}
int main() {
int u = 3; v = 4;
// ...
cout << u << " " << v << endl;
func ( u, v );
cout << u << " " << v << endl;
// ...
}
a) 3 4 3 3 
b) 3 4 4 3 
c) 3 4 3 4 
d) 3 4 4 4
e) none of the above.

Answer 38

A

Question 39

The statements int x = 1; int y; y = (++x)++;

a) Assign y the value 2;
b) Change the value of x to2.
c) Assign y the value 0;
d) Assign y the value 1;
e) none of the above.

Answer 39

A

Question 40

Structure definitions are usually local (defined inside functions). T or F

Answer 40

F

Question 41

A structure member is access using the index operator [ ], with the member name as index. [ ] T or F

Answer 41

F

Question 42

The following definition of the structure variables of type myStruct s and t could be
made using several definitions using the structure tag.
struct myStruct
{
int i;
double d;
} s, t; T or F

Answer 42

T

Question 43

Consider the struct definition below. This will set a's i member variable to 3. struct myStruct
{
int i;
double d; };
...
myStruct a;
a->i = 3; T or F

Answer 43

F

Question 44

In C++, accessing an element outside your array bounds can cause a segmentation fault. T or F

Answer 44

T

Question 45

It is legal to assign C-string variables, i.e. str1 = str2; T or F

Answer 45

F

Question 46

A structure variable can be defined directly in the same statement that defines a structure
definition. T or F

Answer 46

T

Question 47

A design technique is to break a problem into smaller tasks, with the prospect that a smaller
problem will be easier to solve. If the smaller task is the identical to the original task excepting only that the size is smaller, the problem may be solved using a recursive algorithm, and implemented with a recursive function. T or F

Answer 47

T

Question 48

A proper recursive solution requires at least two cases: a recursive function that calls the recursive function with a smaller problem, and a base, or stopping case. T or F

Answer 48

T

Question 49

A recursive function must not return a value. T or F

Answer 49

F

Question 50

C-string literals are written ‘Hello’. T or F

Answer 50

F

Question 51

A C-string variable is just an array of characters. T or F

Answer 51

F

Question 52

It is illegal to write char message[] =”Go Beavers!”; T or F

Answer 52

F

Question 53

An array behaves like a list of variables each of which is of the same type and for which
there is a uniform, convenient naming convention that can be declared in a single line of
code. T or F

Answer 53

T

Question 54

When using an array, it is perfectly legal to access indexed variables with index values less
than 0 or greater than or equal to the declared size of the array. T or F

Answer 54

F

Question 55

In the definition, double d[10] = {1.0};, all the elements in d are initialized to
1.0. T or F

Answer 55

F

Question 56

You can assign a C++ standard string to a C-string variable, using the c_str() member function of the C++ string object. T or F

Answer 56

T

Question 57

Dynamic variables or dynamically allocated variables in C++ are created and destroyed according to the program’s needs. T or F

Answer 57

T

Question 58

Indexed variables for an array are stored wherever the computer finds memory for the first indexed variable, then the next one is stored next to the first if there is space, and someplace else if not. T or F

Answer 58

F

Question 59

To call a function with an array parameter, write the array argument as the array name followed by empty square brackets, as in f(a[], 7); T or F

Answer 59

F

Question 60

One can use the * operator to extract the value that a pointer points to. T or F

Answer 60

T

Question 61

With arrays, indices start at any number the programmer chooses to indicate in the definition. T or F

Answer 61

F

Question 62

You can use the size() function to determine the length of a C-string. T or F

Answer 62

F

Question 63

To read a character at a time, or to write a character at a time, declare a character variable ch
and write this:
cin&raquo_space; ch; T or F

Answer 63

F

Question 64

You can get a pointer value to initialize a pointer variable from an object of an appropriate type with the “address-of” operator, &. T or F

Answer 64

T

Question 65

When declaring several pointer variables, there must be one pointer declarator for each pointer variable, i.e. double p1, p2, p3; T or F

Answer 65

T

Question 66

Which of the following is a correct statement?
When a function having an array formal parameter is called, void f(int a[]);, the formal array parameter …
a) names a copy of the array argument.
b) refers to exactly the same array as the calling program
c) is passed the address of the argument, and the function needs further information about the
array size to safely use an array parameter
d) refers to the array using a name that is always different from the calling program’s argument.

Answer 66

C

Question 67

Which of the following is a valid C-string?

a) ‘\n’
b) ‘n’
c) “Lamb\n”
d) “Mary\0”
e) “M”

Answer 67

D

Question 68

Given the array declaration, int a[20]; The second element is written as:

a) a[1]
b) a[0]
c) a
d) a[2]
e) a[3]

Answer 68

A

Question 69

How many times is the following code invoked by the call recursive(4)? void recursive( int i )
{
using namespace std;
if (i < 8)
{
cout << i++ << " ";
recursive(i);
}
}
a) 2
b) 4
c) 8
d) 32
e) This is an infinite recursion.

Answer 69

B

Question 70

In a recursive solution to a problem, we solve a problem P(n) by solving another problem P(k) where

a) P(k) is the hardest part of P(n)
b) P(k) is a larger problem than P(n)
c) P(k) is smaller or equal to P(n)
d) None of the above

Answer 70

C

Question 71

Which of the following is not a rule that ensures a correct recursive function?

a) Each stopping case must perform a correct action (or return the correct value for stopping
case) for the condition that invokes it.
b) The recursion must make no more than 1000 recursive calls.
c) The chain of recursive calls eventually must reach one of the stopping cases.
d) For cases that involve recursion: If each recursive calls correctly solve the subproblem (or return the correct value for the subproblem) it solve, then the final

Answer 71

B

Question 72

A recursive function is one that

a) Speeds up a program.
b) Is always slower than a nonrecursive function.
c) Calls itself
d) Calls no functions at all.
e) Calls another function

Answer 72

C

Question 73

Consider the function definition and array declarations. Which is the correct call to the function make_1?
void make_1 ( int a[], int size )
{
for (int i = 0; i < size; i++ )
a[i] = 2;
}
int array1[20];
a) make_1( &amp;array1, 30 ); 
b) make_1( array1, 10 ); 
c) make_1( *array1, 50 ); 
d) make_1( array1[],50 );

Answer 73

B

Question 74

Given the definition and code fragment:
int matrix[2][3];
int k = 0;
for(int i =0; i < 2; i++)
for (int j=0, j < 3; j++)
matrix[i][j] = k++;
The value of matrix[1][0] is 
a) 0
b) 1
c) 2
d) 3 
e) 4

Answer 74

D

Question 75

Some pointer arithmetic is allowed. Which of the following arithmetic operators is not allowed?

a) pointer + integer
b) pointer + pointer
c) pointer - integer
d) integer * pointer
e) both c and d

Answer 75

D

Question 76

The header file that you must #include to have access to the Standard Library C-string functions is

a) C-string
b) string.h
c) string
d) String.h
e) None of the above

Answer 76

B

Question 77

Given the definitions,
int p1, p2;
p1 = new int;
p2 = new int;
Which is the correct way to make p1 point to the same thing as p2?
a) p1 = p2; 
b) p1 = &p2; 
c) p1 = p2; 
d) *p1 = p2;

Answer 77

C

Question 78

Given the structure type and variable definitions
struct ShoeSize
{
char width;
int number;
};
struct ShoeType
{
char style;
ShoeSize size;
double price;
};
ShoeType shoe1;
Which of these is an illegal call to a member variable? 
a) shoe1.style
b) shoe1.width
c) shoe1.size.number
d) shoe1.price

Answer 78

B

Question 79

Here is a recursive function. How many times is Hip, printed with the following call,
rec_cheers(5);
void rec_cheers(int n)
{
using namespace std;
if(1==n)
cout << "Hurray!" << endl;
else
{
cout << "Hip, ";
rec_cheers(n-1);
} }
a) 5
b) 4
c) 3
d)2
e) None of the above

Answer 79

B

Question 80

Which is the correct way to dynamically create a 1-d array of 6 integers on the heap?

a) int p1[6];
b) int (splat)p1 = new int(splat)[6];
c) int (splat)p1[6];
d) int (splat)p1 = new int[6];

Answer 80

D

Question 81

Which of the following does not define a C-string containing “Hello”?

a) char stringVar[10] = “Hello”;
b) char stringVar[10] = {‘H’, ‘e’, ‘l’, ‘l’, ‘o’};
c) char stringVar[10] = {‘H’, ‘e’, ‘l’, ‘l’, ‘o’, ‘\0’};
d) char stringVar[6] = “Hello”;
e) char stringVar[] = “Hello”;

Answer 81

B