Q2

Question 1

In the following custom type, which member is a query?

struct Movie
{
    char m_title[32];
    const double m_price;
    void setTitle(const char* title);
    double getPrice() const;
};

Answer 1

getPrice

Question 2

Which functions are allowed to modify private data in a custom type named Foo?

Answer 2

Only member functions of Foo.

Question 3

Which of the following is the insertion operator?

Question 4

What is an empty state?

Answer 4

It’s a special state for an object that signals the object doesn’t contain valid data.

Question 5

Which of the following is the extraction operator?

Answer 5

> >

Question 6

For the following custom type, what is correct way to define the member function getTitle in the cpp file?

Answer 6

const char* TvShow::getTitle() const
{
    /* implementation */
}

Question 7

Regarding the following code

class Book
{
    char m_title[32];
    double m_price;

    int getNumberOfWords(const int& page) const;
};  

which statement is true?

Answer 7

The function getNumberOfWords() cannot change the state of the object or the parameter.

Question 8

What is a difference between a C++ class and a C++ struct?

Answer 8

Members of the class are private by default, while members of the struct are public by default.

Question 9

Which object is used in C++ to read data from the keyboard?

Answer 9

cin