Code for calculating circle Area and Circumference

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Need help with a program calculate the area and circumference of the circle by declaring a class

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Answered By 0 points N/A #95971

Code for calculating circle Area and Circumference

//  This program calculate the area and circumference of the circle by declaring a class

//  Including header files in the program.
#include <iostream>

using namespace std;
// defining a macro for the value of PI
#define PI 3.14

//  Beginning of the class Circle
class Circle {

//  declaring public members of the class
public:

double radius;    //    only data member of the class

//       declaration of public member functions of the class

Circle();            //  default constructor

Circle(double);       //  Parameterized constructor

double CalculateArea();       // calculates area of the circle and then returns

double CalculateCircum();//       calculates circumference of the circle

void Display();       //       displays the area and circumference of the screen

};

//       end of class

//  definition of default constructor of class
Circle::Circle()
{
radius = 0.0;   // assignning default value to the data member radius
}

//    definition of parameterized constructor of the class
{
}

//    definition of the function for area calculation of the circle
double Circle::CalculateArea()
{
return (PI * radius * radius);  //  calculating area and then returning it the caller function
}

//    definition of the function for calculating circumference of the circle
double Circle::CalculateCircum()
{
return ( 2 * PI * radius ); //  calculating and returning the circumferencr to the caller function
}

//    definition of display() function
void Circle::Display()
{

cout<<endl<<endl;

cout<<"Area of Circle:ttt"<<CalculateArea();
cout<<endl<<endl;

cout<<"Circumference of Circlett"<<CalculateCircum();
cout<<endl<<endl;

}

//    beginning of the main() function
main()
{
Circle C1, C2(3.5);     // declaring two objects of class student

//    for each object created, displaying the information on the screen
C1.Display();
C2.Display();

system("pause");    // system function to halt the output screen
}

Answered By 0 points N/A #95972

Code for calculating circle Area and Circumference

`Check out this :`
`#include<iostream>`
`#include<cmath>`
`usingnamespacestd;`
` `
`intmain ()`
`{`
` `
`    floatradius;`
`    floatcircumference;`
`    floatarea;`
` `
`    cout <<"Please enter the radius of a circle: ";`
`    cin >>radius;`
`    cout <<"n";`
` `
`    circumference =2*3.1416*radius;`
`    area =3.1416*radius *radius;`
` `
`    cout <<"************************************"<<"n"`
`         <<"*Area and Circumference of A Circle*"<<"n"`
`         <<"************************************"<<"n"`
`         <<"tRadius= "<<radius <<"n"`
`         <<"tArea= "<<area <<"n"`
`         <<"tCircumference= "<<circumference <<"n";`
` `
`    cin.get();`
` `
` `
`    return0;`
` `
`}//end main`