#include <iostream>
#include <math.h>
#include <cstdlib>
#include <iomanip>
using namespace std;

class Vec{
public:
    Vec(double);
    Vec(double,double);
    Vec(double,double,double);
    void abs(void);
    ~Vec() {delete[] data_;};
    Vec(const Vec& copy);
private:
    double* data_;
    size_t dimension;
};
//methods
Vec::Vec (const Vec& copy){
    data_ = new double;
    memcpy(data_, copy.data_, sizeof(double));
}
Vec::Vec (double vector){
    data_ = new double;
    *data_ = vector;
    dimension = 1;
}
Vec::Vec (double vector,double vector1){
    data_ = new double[2];
    *data_ = vector;
    *(data_+1) = vector1;
    dimension = 2;
}
Vec::Vec (double vector,double vector1,double vector2){
    data_ = new double[3];
    *data_ = vector;
    *(data_+1) = vector1;
    *(data_+2) = vector2;
    dimension = 3;
}
void Vec::abs(){
    for (size_t i = 0; i<dimension; i++){
        cout << *(data_++) << " | ";
    };
}

//main function
int main() {
    Vec vector1(1.1);
    Vec vector3(1.0,2.0,3.0);
    Vec vector2(1.0,2.0);
    //cout<< setprecision(4) << 1.0f;
    vector1.abs();
    cout << endl;
    vector2.abs();
    cout << endl;
    vector3.abs();
};