C++ Inline Function Area of Circle

By | March 6, 2020

C ++ Inline Function Area of Circle

Task: Write down a C++ program to use an inline function named Area(). This function will calculate and return the area of a circle. The radius of the circle is a parameter to the Area() function.

How this program with Inline Function Works?

First of all we will write a main function in C++. The user will provide an input called radius of the circle. The main function will pass the radius to the inline function as parameter.

"C++

The function Area() will accept the parameter and calculate the area of the circle by using the following formula:

Formula for calcuating Area of Circle

area of circle = 3.1415 x radius2

That is : area = 3.1415 x radius x radius

The C++ expression for the above formula is as follows:

area = 3.1415 * radius * radius;

Because we use * for multiplication in C++ programming language.

The source code for Inline function program in C++

// C++ Program to show use of Inline 
// functions
// calculate area of circle
#include<iostream>

using namespace std;

inline float Area(float radius)
{
    return 3.1415 * radius * radius;
}
int main()
{

  
  float radius;
  cout<<"Enter Radius of circle=";
  cin>>radius;
  cout<<"Area of circle using Inline Function is : "<<Area(radius);
  return 0;

}

/*
OUTPUT of the program Inline Functions in C++
Enter Radius of circle=5.25
Area of circle using Inline Function is : 86.5876
--------------------------------
Process exited after 28.59 seconds with return value 0
Press any key to continue . . .


*/

Out put from another sample run

Enter Radius of circle=1.5673
Area of circle using Inline Function is : 7.71687
——————————–
Process exited after 10.9 seconds with return value 0
Press any key to continue . . .

 

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