Function template: In C++, a function template is referred as a “generic” function, which can work with different data types. While writing a function template, a programmer should use a “type parameter” to denote a “generic” data type instead of using the actual parameter. The compiler generates the code, when it encounters a function call to a function template. This code will handle the particular data type which is used in the function call. The compiler identifies the argument type and generates the code to work with those types. The generated code is referred as “template function”. Example: For example consider the following function template for finding a cube of value: template <class T> T cube(T x) { return x * x * x ; } A function template must begin with the keyword “template” and it is followed by a pair of angle brackets, which contains one or more “generic” data types. A “generic” type must start with the keyword “class”, followed by an argument name which stands for the data type. The statement “T cube(T x)” is referred as function header, where “T” is a “type parameter”, “cube” is the function name and the variable “x” is declared for the type “T”.

Question

Want to see the full answer?

Answer 1

Question

Chapter 17.1, Problem 2STE

Program Plan Intro

Function template:

In C++, a function template is referred as a “generic” function, which can work with different data types.

While writing a function template, a programmer should use a “type parameter” to denote a “generic” data type instead of using the actual parameter.

The compiler generates the code, when it encounters a function call to a function template. This code will handle the particular data type which is used in the function call.

The compiler identifies the argument type and generates the code to work with those types.

The generated code is referred as “template function”.

Example:

For example consider the following function template for finding a cube of value:

  template <class T>

  T cube(T x)

  {

  return x * x * x ;

  }

A function template must begin with the keyword “template” and it is followed by a pair of angle brackets, which contains one or more “generic” data types.

A “generic” type must start with the keyword “class”, followed by an argument name which stands for the data type.

The statement “T cube(T x)” is referred as function header, where “T” is a “type parameter”, “cube” is the function name and the variable “x” is declared for the type “T”.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

If a UDP datagram is sent from host A, port P to host B, port Q, but at host B there is no process listening to port Q, then B is to send back an ICMP Port Unreachable message to A. Like all ICMP messages, this is addressed to A as a whole, not to port P on A. (a) Give an example of when an application might want to receive such ICMP messages. (b) Find out what an application has to do, on the operating system of your choice, to receive such messages. (c) Why might it not be a good idea to send such messages directly back to the originating port P on A?

Discuss how business intelligence and data visualization work together to help decision-makers and data users. Provide 2 specific use cases.

This week we will be building a regression model conceptually for our discussion assignment. Consider your current workplace (or previous/future workplace if not currently working) and answer the following set of questions. Expand where needed to help others understand your thinking: What is the most important factor (variable) that needs to be predicted accurately at work? Why? Justify its selection as your dependent variable.