Quiz for Function templates

Q1: What is a function template in C++?

A. A blueprint for creating functions to work with any data type B. A specific function for int data type C. A function that only works with classes D. A function that cannot be overloaded

Q2: Which keyword is used to define a template?

A. template B. func C. generic D. typedef

Q3: How do you specify the template parameter for a function template?

A. template <typename T> B. function <T> C. template (T) D. class <T>

Q4: Can function templates be overloaded?

A. Yes, based on template parameters or normal functions B. No, they cannot be overloaded C. Yes, but only with the same parameter types D. Only class templates can be overloaded

Q5: What happens when you call a function template with an int argument?

A. A copy of the function for int is created B. The generic function is called C. An error occurs D. The function is ignored

Q6: Which of these is a valid function template syntax?

A. template <typename T> T max(T a, T b); B. template function max(T a, T b); C. template max<T>(T a, T b); D. function template <T> max(a, b);

Q7: Can template parameters have default types?

A. Yes, templates can have default parameters B. No, template parameters must always be specified C. Only class templates can have defaults D. Only function templates with int types can have defaults

Q8: How do you explicitly specify a template argument when calling a function?

A. max<double>(3.5, 2.5); B. max(3.5, 2.5); C. max<3.5, 2.5>(); D. max(T=double)(3.5, 2.5);

Q9: Are function templates instantiated at compile time or runtime?

A. Compile time B. Runtime C. Both compile and runtime D. Depends on the compiler

Q10: Which of the following is a benefit of function templates?

A. Code reuse for different data types B. Faster execution C. Better memory management D. Smaller executable size

Q11: Can you use multiple template parameters in a function template?

A. Yes, like template<typename T, typename U> B. No, only one template parameter is allowed C. Yes, but only for class templates D. No, multiple template parameters cause errors

Q12: What does the following template represent? template<typename T> T add(T a, T b);

A. A function template that adds two values of the same type B. A function that adds integers only C. A class template D. A macro

Q13: Can function templates have non-type template parameters?

A. Yes, such as template<int N> B. No, only type parameters C. Yes, but only for class templates D. No, non-type parameters are illegal

Q14: What error occurs if a function template is called with unsupported operations?

A. Compilation error B. Runtime error C. Linker error D. No error

Q15: Can function templates call other function templates?

A. Yes, templates can call other templates B. No, this causes recursion C. Only class templates can call other templates D. No, it leads to compile errors

Q16: How does template specialization affect function templates?

A. Allows customizing behavior for specific types B. Prevents template instantiation C. Disables overloading D. Increases runtime

Q17: Can function templates be recursive?

A. Yes, they can call themselves B. No, templates cannot be recursive C. Only class templates can be recursive D. Yes, but only for integral types

Q18: Which is true about function template instantiation?

A. Occurs when the function is used with a specific type B. Occurs at program start C. Always generates code for all types D. Must be manually instantiated

Q19: What does SFINAE mean in context of templates?

A. Substitution Failure Is Not An Error B. Some Function Is Not An Error C. Static Function In Normal Error D. Simple Function Instantiation Not Allowed