Question 1

Assuming that all four of the following functions are defined, which one will be called by the function call square(23.4)? A) template T square(T num) B) template T1 square(T1 num1, T2 num2) C) int square(int num) D) double square(double num)

Accepted Answer

The function call square(23.4) involves a double argument, and among the given options, only option D defines a function that takes in a double argument. Hence, option D would be called.

Question 2

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.

Accepted Answer

Function templates can be overloaded by defining non-template functions with the same name but different parameters, allowing different implementations based on the arguments passed.

Question 3

Function templates: A) Can include objects of template classes as parameters. B) Must have return type T. C) Do not need a separate template statement if they take objects from a template class as a parameter. D) Do not need a separate template statement.

Accepted Answer

Function templates can indeed include objects of template classes as parameters. This allows for generic programming, where functions can operate on a variety of data types as specified by the template parameters. The other statements are incorrect: B) Function templates can have any return type, not just type T. C) Function templates still require a template declaration, even if they take objects from a template class as a parameter. D) A function template must be preceded by a template declaration specifying its template parameters.

Question 4

Default type parameters are allowed only:
A) If the class template also has nontype parameters.
B) If the class template does not have any nontype parameters.
C) If the class is used as a container class.
D) As the rightmost (trailing) parameters in a template's type-parameter list.

Accepted Answer

Default type parameters must be the rightmost (trailing) parameters in a template's type-parameter list. This means that the template can have other non-defaulted type parameters before them.

Question 5

[C++ 11]: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) As of C++ 11, you can use default type arguments for template type parameters in function templates.
D) None of the above.

Accepted Answer

As of C++ 11, default type arguments can be used for type parameters in both class templates and function templates. Therefore, options A and B are incorrect. Option D is also incorrect as C++ 11 introduced this feature.

Question 6

Class templates: A) May include the statement template anywhere. B) Must put template before the class definition. C) Must include template inside the class definition. D) Have the option of including the optional statement template.

Accepted Answer

According to the syntax for class templates, the template<typename Type> statement must be put before the class definition.

Question 7

Nontype parameters are:
A) Unable to have default arguments.
B) Specified before the angle-bracket-enclosed type-parameter list.
C) Constants.
D) Required for class templates.

Accepted Answer

Nontype parameters in templates are constants, meaning they must be known at compile time and cannot change.

Question 8

The relationship between function templates and function-template specializations is most similar to the relationship between:
A) Classes and objects.
B) Classes and functions.
C) Functions and return types.
D) Headers and source files.

Accepted Answer

Just like how classes can have multiple objects with different properties but the same structure, function templates can have multiple function-template specializations with different arguments but the same structure.

Question 9

For a class template, the scope resolution operator (::) is needed:
A) Only in the definitions of the member functions defined outside the class.
B) Both in the prototype and definition of a member function.
C) Only if multiple class-template specializations will be created from this class template.
D) In neither the definition nor prototype of member functions.

Accepted Answer

The scope resolution operator (::) is only needed in the definitions of the member functions defined outside the class. It is not needed in the prototype or definition of member functions defined inside the class. It is also not required for creating multiple class-template specializations.

Quiz 18: Introduction to Custom Templates

Assuming that all four of the following functions are defined, which one will be called by the function call square(23.4) ?

A function template can be overloaded by:

Function templates:

Default type parameters are allowed only:

[C++ 11]:Which of the following is true?

Class templates:

Nontype parameters are:

The relationship between function templates and function-template specializations is most similar to the relationship between:

For a class template, the scope resolution operator (::) is needed: