3. OOP Test.

#include <cstdlib>  // Standard General Utilities Library
#include <cstdio>   // Input/Output operations (C)
#include <iostream> // Input/Output stream objects
#include <fstream>  // File input and output
#include <ctime>    // Date and time information
#include <cmath>    // Mathematical operations and transformations
using namespace std;

// Classes
class opkontrolinis {
private:
    int a, b;
    double c, d;
public:
    opkontrolinis();
    opkontrolinis(int, int, double, double);

    void print();
    double suma();
};

// Methods
opkontrolinis::opkontrolinis() {
    a = 1;
    b = 1;
    c = 1;
    d = 1;
}

opkontrolinis::opkontrolinis(int p1, int p2, double p3, double p4) {
    a = p1;
    b = p2;
    c = p3;
    d = p4;
}

void opkontrolinis::print() {
    cout << a << " " << b << " " << c << " " << d << endl;
}

double opkontrolinis::suma() {
    return a + b + c + d;
}

// Main program
int main(int argc, char *argv[]) {

    opkontrolinis obj1;
    opkontrolinis obj2(5, 10, 15.5, 20.3);

    obj1.print();
    cout << "Suma = " << obj1.suma() << endl << endl;

    obj2.print();
    cout << "Suma = " << obj2.suma() << endl << endl;

    return 0;
}