CPP

C++ area & circumference of a circle

	int rad;
    float area, circum;

	cout << "Input the radius(1/2 of diameter) of a circle: ";
    cin >> rad;

	area = 3.14 * rad * rad; // 3.14 * (rad * rad);
    circum = 2 * 3.14 * rad;

C++ Area and Circumference of a Circle

    float rad,circum,area;
    const float PI = 3.14159265;

    cout<<"Input the radius of the Circle: ";
    cin>>rad;

    circum = 2*PI*rad;
    area = PI*rad*rad;

    cout<<"The Diameter is "<<area<<" and the circumference is "<<circum;