C++ Templates Quiz

What is a template in C++?

• A predefined function

• A blueprint for creating functions or classes

• A type of variable

• A keyword in C++

Which of the following is a correct way to define a function template?

•  `template function<int> void func() {}`

• `template <typename T> void func() {}`

• `function template<T> void func() {}`

  
  

• `template <T> void func() {}`

What is the primary benefit of using templates in C++?

• Improved performance

• Code reuse and type safety

• Simplicity of syntax

• Increased memory usage

Which of the following statements about class templates is true?

• Class templates cannot have member functions.

• Class templates are not type safe.

• Class templates can be instantiated with different types.

• Class templates require a return type.

How do you instantiate a template class with the type `int`?

• `MyClass<int> obj;`

• `MyClass obj<int>;`

• `MyClass obj(int);`

• `MyClass<int> obj();`

What keyword is used to define a template parameter that can accept any type?

• `var`

• `template`

• `typename`

• `class`

Which of the following is an example of a template specialization?

• `MyClass<int> obj();`

• `template<> void func<int>() {}`

• `template<type T> void func() {}`

• `void func() {}`

What is the result of using a template function with non-compatible types?

• Compilation error

• Runtime error

• The program runs without issues

• Automatic type conversion

Which of the following correctly defines a template that accepts two parameters of different types?

• `template <typename T1, typename T2> void func(T1, T2) {}`

• `template <T1, T2> void func() {}`

• `template <typename T> void func(T, T) {}`

• `template <int a, int b> void func() {}`

What is the output of the following code?

• 5, 3.14

• 5.0, 3.14

• Compilation error

• Runtime error