2. Assignment. (Circle length, coordinates)

#include <cstdlib>  // Standard General Utilities Library
#include <iostream> // Input output stream

using namespace std;

#define pi 3.14

// Classes
class circle {
private:
    float x, y, r;
public:
    circle();
    circle(float);
    circle(float, float);
    circle(float, float, float);

    float length(); //2 pi r
    void assign(float, float, float);
    void print();
};

// Methods
circle::circle() {
    x = 0;
    y = 0;
    r = 1;
}

circle::circle(float var1) {
    x = var1;
    y = var1;
    r = 1;
}

circle::circle(float var1, float var2) {
    x = var1;
    y = var2;
    r = 1;
}

circle::circle(float var1, float var2, float var3) {
    x = var1;
    y = var2;
    r = var3;
}

void circle::assign(float var1, float var2, float var3) {
    x = var1;
    y = var2;
    r = var3;
}

float circle::length() {
    return 2 * pi * r;
}

void circle::print() {
    cout << "C = (" << x << ", " << y << ");" << endl;
    cout << "r = " << r << endl;
    cout << "L = " << length() << endl;
}

// Function prototypes

// Main program
int main(int argc, char *argv[]) {
    circle A(1, 3, 3);
    A.print();

    cout << " " << endl;
    return 0;
}