C++ Programming Code Examples
C++ > Computer Graphics Code Examples
Circumference Of Circle
/* Circumference Of Circle
When a circle's diameter is 1, its circumference is ?. When a circle's radius is 1-called a unit circle-its circumference is 2?.
Formula
The circumference of a circle is written
? = C / d
Or, equivalently, as the ratio of the circumference to twice the radius. The above formula can be rearranged to solve for the circumference:
C = ? * d = 2? * r
here,
r = Radius
? = ~3.14 */
#include <iostream>
#include<conio.h>
#include<stdlib.h>
using namespace std;
float PI = 3.14;
int main() {
// Declare Variables
float radius, ci;
cout << "Simple C++ Program : Circumference Of Circle\n";
cout << "\nEnter the radius of Circle : ";
cin>>radius;
ci = 2 * PI * radius;
cout << "\nCircumference of Circle : " << ci;
getch();
return (0);
}
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