Question 1

Describe in terms of who needs access to class members why the public members should come first in a class definition.

Accepted Answer

The client is more interested in the public members.The client cannot access the private members,and thus has no real (direct)use for them.Hence the public members should be placed first in a class.

Question 2

If v is a vector and i is an int variable,then in the following the value of i can be any nonnegative int value:
v[i] = i;

Accepted Answer

A) True 
 B)False  False

Question 3

A constructor is always named construct with class name attached.If the class is Foo,then the constructor name is constructFoo.

Accepted Answer

A) True 
 B)False  False

Question 4

It is valid to initialize member variables in a class on the same line in which the variable is declared.For example,the following sets xx to 1000:
class A
{
public:
A(){}
private:
int xx = 1000;
};

Accepted Answer

A) True 
 B)False

Question 5

Assignment behaves essentially the same for vectors as for arrays.

Accepted Answer

A) True 
 B)False

Question 6

Why is it an error to add a const modifier,as shown to the declaration for the member function input given here?
class BankAccount
{
public:
void input( )const;
// other members
};

Accepted Answer

If an input routine

Question 7

A class member that is to be shared among all objects of a class is called

Accepted Answer

A) A const member 
B) A reference member 
C) A static member. 
D) A value member 
E) A function member 
A) A const member 
B) A reference member 
C) A static member. 
D) A value member 
E) A function member

Question 8

A class may not have another class type object as a member.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following are legal access to the class or struct members? Assume each is outside of the class member definitions,
struct S class C class D
{ { {
int x;int x;public:
int y;int y;int x;
} private: int y;
S s;int z;private:
};int z;
C c;};
D d;
a)s.x
b)c.x
c)d.x
d)c.z
e)d.z

Accepted Answer

a)s.x is legal.struct members are public

Question 10

Explain why data members,in particular should be placed in the private section of a class.

Accepted Answer

A C++ class contains a complete list of

Question 11

A constructor is like a function.It can return any type value needed.

Accepted Answer

A) True 
 B)False

Question 12

You can write a class that is useful with all its constructors in the private section.

Accepted Answer

A) True 
 B)False

Question 13

Any use of the keyword const is a promise to the compiler,and a request to the compiler to enforce the promise.What promises?

Accepted Answer

A) True 
 B)False

Question 14

It is legal to call a constructor as a member function of an object of a class,as in
class A
{
public:
A(){}
A(int x,int y):xx(x),yy(y){}
// other members
private:
int xx;
int yy;
};
int main()
{
A w;
w.A(2,3);// Is this legal?
}

Accepted Answer

A) True 
 B)False

Question 15

A constructor is a special kind of member function.It is automatically called when an object of that class is declared.

Accepted Answer

A) True 
 B)False

Question 16

Describe the differences between a call to an inline function member and a function that is not declared inline..What advantages are there to inline? What disadvantages?

Accepted Answer

When a function is invoked,normally the

Question 17

Which of the following are accurate comparisons between call-by-value and const call-by-reference?

Accepted Answer

A) Both protect against changing the caller's argument. 
B) Both are very fast for all sizes of objects. 
C) Call-by-value copies the argument whereas const call-by-reference does not 
D) Call by value uses more memory than const call-by-reference in making the copy. 
A) Both protect against changing the caller's argument. 
B) Both are very fast for all sizes of objects. 
C) Call-by-value copies the argument whereas const call-by-reference does not 
D) Call by value uses more memory than const call-by-reference in making the copy.

Question 18

If we use an out of range index with a vector,there be an error message from the compiler.

Accepted Answer

A) True 
 B)False

Question 19

Inline functions are always more efficent than noninline functions.

Accepted Answer

A) True 
 B)False

Question 20

size and capacity of a vector are two names for the same thing.

Accepted Answer

A) True 
 B)False

Describe in terms of who needs access to class members why the public members should come first in a class definition.

If v is a vector and i is an int variable,then in the following the value of i can be any nonnegative int value: v[i] = i;

A constructor is always named construct with class name attached.If the class is Foo,then the constructor name is constructFoo.

It is valid to initialize member variables in a class on the same line in which the variable is declared.For example,the following sets xx to 1000: class A { public: A(){} private: int xx = 1000; };

Assignment behaves essentially the same for vectors as for arrays.

Why is it an error to add a const modifier,as shown to the declaration for the member function input given here? class BankAccount { public: void input( )const; // other members };

A class member that is to be shared among all objects of a class is called

A class may not have another class type object as a member.

Which of the following are legal access to the class or struct members? Assume each is outside of the class member definitions, struct S class C class D { { { int x;int x;public: int y;int y;int x; } private: int y; S s;int z;private: };int z; C c;}; D d; a)s.x b)c.x c)d.x d)c.z e)d.z

Explain why data members,in particular should be placed in the private section of a class.

A constructor is like a function.It can return any type value needed.

You can write a class that is useful with all its constructors in the private section.

Any use of the keyword const is a promise to the compiler,and a request to the compiler to enforce the promise.What promises?

It is legal to call a constructor as a member function of an object of a class,as in class A { public: A(){} A(int x,int y):xx(x),yy(y){} // other members private: int xx; int yy; }; int main() { A w; w.A(2,3);// Is this legal? }

A constructor is a special kind of member function.It is automatically called when an object of that class is declared.

Describe the differences between a call to an inline function member and a function that is not declared inline..What advantages are there to inline? What disadvantages?

Which of the following are accurate comparisons between call-by-value and const call-by-reference?

If we use an out of range index with a vector,there be an error message from the compiler.

Inline functions are always more efficent than noninline functions.

size and capacity of a vector are two names for the same thing.

C++ Basics

Flow of Control

Function Basics

Parameters and Overloading

Arrays

Structures and Classes

Operator Overloading,friends,and References

Strings

Pointers and Dynamic Arrays

Separate Compilation and Namespaces

Streams and File IO

Recursion

Inheritance

Polymorphism and Virtual Functions

Templates

Linked Data Structures

Exception Handling

Standard Template Library

Patterns and Uml

Filters

Exam 7: Constructors and Other Tools

Describe in terms of who needs access to class members why the public members should come first in a class definition.

If v is a vector and i is an int variable,then in the following the value of i can be any nonnegative int value: v[i] = i;

A constructor is always named construct with class name attached.If the class is Foo,then the constructor name is constructFoo.

It is valid to initialize member variables in a class on the same line in which the variable is declared.For example,the following sets xx to 1000: class A { public: A(){} private: int xx = 1000; };

Assignment behaves essentially the same for vectors as for arrays.

Why is it an error to add a const modifier,as shown to the declaration for the member function input given here? class BankAccount { public: void input( )const; // other members };

A class member that is to be shared among all objects of a class is called

A class may not have another class type object as a member.

Which of the following are legal access to the class or struct members? Assume each is outside of the class member definitions, struct S class C class D { { { int x;int x;public: int y;int y;int x; } private: int y; S s;int z;private: };int z; C c;}; D d; a)s.x b)c.x c)d.x d)c.z e)d.z

Explain why data members,in particular should be placed in the private section of a class.

A constructor is like a function.It can return any type value needed.

You can write a class that is useful with all its constructors in the private section.

Any use of the keyword const is a promise to the compiler,and a request to the compiler to enforce the promise.What promises?

It is legal to call a constructor as a member function of an object of a class,as in class A { public: A(){} A(int x,int y):xx(x),yy(y){} // other members private: int xx; int yy; }; int main() { A w; w.A(2,3);// Is this legal? }

A constructor is a special kind of member function.It is automatically called when an object of that class is declared.

Describe the differences between a call to an inline function member and a function that is not declared inline..What advantages are there to inline? What disadvantages?

Which of the following are accurate comparisons between call-by-value and const call-by-reference?

If we use an out of range index with a vector,there be an error message from the compiler.

Inline functions are always more efficent than noninline functions.

size and capacity of a vector are two names for the same thing.

C++ Basics

Flow of Control

Function Basics

Parameters and Overloading

Arrays

Structures and Classes

Operator Overloading,friends,and References

Strings

Pointers and Dynamic Arrays

Separate Compilation and Namespaces

Streams and File IO

Recursion

Inheritance

Polymorphism and Virtual Functions

Templates

Linked Data Structures

Exception Handling

Standard Template Library

Patterns and Uml

Filters