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Question
Q1: When an argument is passed-by-value, changes in the calling function __________ affect the original variable's value; when an argument is passed call-by-reference, changes __________ affect the original variable's value.a. Do not, do.
b. Do not, do not.
c. Do, do.
d. Do, do not.
Answer
This answer is hidden. It contains 11 characters.
Related questions
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Q1: Exception handling should not be used:
a. As an alternative for program control.
b. To make error handling uniform on large projects.
c. To deal with errors that do not arise very often.
d. To deal with errors for components that will be widely used in other applications, such as classes and libraries.
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Q1: What will be output by the following statements?double x = .0012345;cout << fixed << x << endl;cout << scientific << x << endl;a. 1.234500e-0030.001235b. 1.23450e-0030.00123450c. .0012351.234500e-003d. 0.001234501.23450e-003
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Q1: When the showbase flag is set:
a. The base of a number precedes it in brackets.
b. Decimal numbers are not output any differently.
c. "oct" or "hex" will be displayed in the output stream.
d. Octal numbers can appear in one of two ways.
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Q1: Which of the following is not a member function of the C++ ostream class?
a. Stream-insertion operator (<<).
b. Stream-extraction operator (>>).
c. put.
d. write.
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Q2: Which of the following is not an object of the ostream class?
a. cout
b. cerr
c. cin
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Q1: Which C++ data type was designed to store Unicode characters?
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b. long
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Q1: Select the correct statement regarding C++ I/O streams:
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b. High-level (formatted) I/O is best for large-volume transfers.
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Q4: Abstract classes do not necessarily have:
a. A 0 pointer in their vtable.
b. A virtual function prototype with the notation = 0.
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d. Zero references to their class.
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Q2: Concrete classes that inherit virtual functions but do not override their implementations:
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d. Receive pointers to pure virtual functions.
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Q1: The line:
virtual double earnings() const = 0;
appears in a class definition. You cannot deduce that:
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b. This class is an abstract class.
c. Any concrete class derived from this class will have an earnings function.
d. This class will probably be used as a base class for other classes.
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Q4[C++11]: Which of the following statements is true?a. In C++11, all classes can be used as base classes.b. In C++11, only classes that are not declared as final can be used as base classes.c. In C++11, only classes that are declared as base can be used as base classes.d. None of the above
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Q2: Which of the following is true about using inheritance in software engineering?
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b. It is best to create a huge class library to make it easy for a client to find the most appropriate class for his or her needs.
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d. The standard C++ libraries that are shipped with C++ compilers are usually enough to accomplish anything an application might need to do.
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Q3[C++11]: Which of the following statements about inheriting base class constructors is false?
a. To inherit a base class's constructors, you write the following line of code in the derived class definition (BaseClass is the base class's name):
using BaseClass::BaseClass;
b. If an inherited base-class constructor has default arguments, the line of code in Part (a) causes the compiler to generate a derived-class constructor with the same default arguments.
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c. "CDEF"
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b. ostream operator<<( ostream &output, const Data &dataToPrint )
c. ostream &operator<<( const Data &dataToPrint, ostream &output )
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Q:
Q4: y and z are user-defined objects and the += operator is an overloaded member function. The operator is overloaded such that y += z adds z and y, then stores the result in y. Which of the following expressions is always equivalent to y += z?a. y = y operator+= zb. y.operator+=(z)c. y = y + zd. y operator+=(y + z)
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Q3: An overloaded + operator takes a class object and a double as operands. For it to be commutative (i.e., a + b and b + a both work):a. operator+ must be a member function of the class from which the objects are instantiated.b. operator+ must be a non-member function.c. It must be overloaded twice; the operator+ function that takes the object as the left operand must be a member function, and the other operator+ function must be a global function.d. The + operator cannot be overloaded to be commutative.
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Q1: Which of the following is false?
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Q:
Q3: Assume that t is an object of class Test, which has member functions a(), b(), c() and d(). If the functions a(), b() and c() all return references to an object of class Test (using the dereferenced this pointer) and function d() returns void, which of the following statements will not produce a syntax error:
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c. t.d().c();
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Q:
Q2: Which of the following statements about friend functions and friend classes is false?a. A class can either grant friendship to or take friendship from another class using the friend keyword.b. A friend declaration can appear anywhere in a class definition.c. A friend of a class can access all of its private data member and member functions.d. The friendship relationship is neither symmetric nor transitive.
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Q2: A client changing the values of private data members is:
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d. Only possible if the private variables are not declared inside the class.
Q:
Q2: Which of the following is not true of a destructor?
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Q:
Q2: Utility functions:
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b. Are part of a class's interface.
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d. Are a type of constructor.
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Q1: A function template can be overloaded by:
a. Using other function templates with the same function name and parameters.
b. Using non-template functions with the same name and different parameters.
c. Using non-template functions with a different name but the same parameters.
d. Using other function templates with a different name but the same parameters.
Q:
Q1: Which of the following is true?a. Only class templates may specify default type arguments for type parameters.b. Only function templates may specify default type arguments for type parameters.c. Both class templates and function templates may specify default type arguments for type parameters.d. None of the above.
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Q1: Nontype parameters are:
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b. Specified before the angle-bracket-enclosed type-parameter list.
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d. Required for class templates.
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Q3: Function templates:
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b. Must have return type T.
c. Do not need a separate template< typename type >statement if they take objects from a template class as a parameter.
d. Do not need a separate template< typename type >statement.