41 Lecture

1. What is a template function? a) A function that only works with one specific data type b) A function that can work with multiple data types c) A function that is used to create classes d) A function that is only used in object-oriented programming

Answer: b

2. What is the syntax for declaring a template function in C++? a) template<typename T> void functionName(T arg); b) void functionName<T>(T arg); c) template<T> void functionName(T arg); d) typename T void functionName(T arg);

Answer: a

3. What is the purpose of a template function? a) To create a specialized function for a specific data type b) To create a function that can work with multiple data types c) To create a function that is used for input/output operations d) To create a function that is used for debugging purposes

Answer: b

4. How does a template function differ from a regular function? a) A template function can only work with one data type b) A template function cannot be called directly c) A template function can work with multiple data types d) A template function does not need a return type

Answer: c

5. What is a template parameter? a) A variable used to hold data b) A type used to represent a data type in a template function c) A function used to manipulate data d) A value that is returned by a function

Answer: b

6. Can template functions be overloaded? a) Yes b) No

Answer: a

7. What is a template specialization? a) A way to create a specialized version of a template function for a specific data type b) A way to create a template function that works with all data types c) A way to create a function that cannot be used with templates d) A way to create a function that can only be used with templates

Answer: a

8. What is a non-type template parameter? a) A variable used to hold data b) A type used to represent a data type in a template function c) A value used to represent a constant in a template function d) A function used to manipulate data

Answer: c

9. Can templates be used with classes? a) Yes b) No

Answer: a

10. What is the benefit of using template functions? a) Reduced development time b) Increased compilation time c) Limited functionality d) Limited reusability

Answer: a

1. What is a template function in C++? A template function is a function that is designed to work with multiple data types by using template parameters.

2. How do you declare a template function in C++? You declare a template function by using the keyword "template" followed by the template parameter list and the function declaration.

3. What is the purpose of a template parameter? A template parameter is used to represent a data type or a constant value that can be used by the template function.

4. How does template specialization work in C++? Template specialization is a way to create a specialized version of a template function for a specific data type or value.

5. What is a non-type template parameter in C++? A non-type template parameter is a value that is used as a template argument, but is not a data type.

6. How does template argument deduction work in C++? Template argument deduction is the process of determining the data types of template arguments based on the function arguments.

7. How do you overload a template function in C++? You can overload a template function by defining a new function with the same name but different template parameters.

8. What is the difference between a function template and a class template in C++? A function template is a template function, whereas a class template is a template class that can contain member functions and data.

9. What are the advantages of using template functions in C++? Template functions provide code reusability, reduce development time, and allow for generic programming.

10. What are the potential drawbacks of using template functions in C++? Template functions can lead to longer compilation times, increased complexity, and can be difficult to understand for novice programmers.

Template functions are a powerful tool in C++ programming that allow developers to write generic functions that work with multiple data types. They are an important feature of the language and are widely used in both container classes and algorithms. Template functions are particularly useful for avoiding code duplication, reducing development time and improving code quality. The syntax for declaring a template function involves the use of the template keyword, followed by the template parameter list, and then the function declaration. The template parameter list specifies the types of data that the function can accept as parameters. The types specified can be specific data types such as int or float, or more general types such as classes or structs. Template functions can be called in the same way as regular functions, with the data type being inferred from the argument passed to the function. This is known as template argument deduction. If a template function is called with an argument of a different data type than that which was specified in the template parameter list, a compiler error will occur. Template functions can be overloaded just like regular functions. Overloading a template function involves defining a new function with the same name but with different template parameters. This allows the function to handle different data types or arguments. Template specialization is a powerful feature of template functions that allows developers to create specialized versions of a template function for specific data types. This can be useful in situations where a specific implementation is required for a particular data type. The syntax for template specialization involves defining a new version of the function with the same name as the original function, but with a specific data type or types specified in the template parameter list. In addition to template parameters that represent data types, C++ also supports non-type template parameters. These are values that are used as template arguments but are not data types. They can be used to represent constants or other values that are required by the function. While template functions offer many benefits, such as code reusability and improved code quality, they can also lead to longer compilation times and can be difficult for novice programmers to understand. As such, it is important to use template functions judiciously and ensure that they are well documented and easy to use.