Question

program in c++ functions ​

Answer 1

Answer:

C++ Functions

Explanation:

A function is a block of code that performs a specific task.

Suppose we need to create a program to create a circle and color it. We can create two functions to solve this problem:

a function to draw the circle

a function to color the circle

Dividing a complex problem into smaller chunks makes our program easy to understand and reusable.

There are two types of function:

Standard Library Functions: Predefined in C++

User-defined Function: Created by users

In this tutorial, we will focus mostly on user-defined functions.

C++ User-defined Function

C++ allows the programmer to define their own function.

A user-defined function groups code to perform a specific task and that group of code is given a name (identifier).

When the function is invoked from any part of the program, it all executes the codes defined in the body of the function.

C++ Function Declaration

The syntax to declare a function is:

returnType functionName (parameter1, parameter2,...) {

// function body

}

Here's an example of a function declaration.

// function declaration

void greet() {

cout << "Hello World";

}

Here,

the name of the function is greet()

the return type of the function is void

the empty parentheses mean it doesn't have any parameters

the function body is written inside {}

Note: We will learn about returnType and parameters later in this tutorial.