Copy Constructor
I'm working on a program for a dynamic array. The programs compiles however it crashes when I try to use the copy constructor the program crashes.
VectorN.h
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#ifndef VECTORN_H
#define VECTORN_H
#include <iostream>
using namespace std;
class VectorN
{
private:
float *vArray;
int vSize;
public:
VectorN();
VectorN(float vector[], int newSize);
float& operator[](int i);
float operator[](int i) const;
friend ostream& operator<<(ostream &leftOp, const VectorN& rightOp);
};
#endif
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VectorN.cpp
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#include "VectorN.h"
#include <iostream>
#include <iomanip>
#include <fstream>
VectorN::VectorN()
{
vArray = new float[vSize];
vSize = 0;
}
VectorN::VectorN(float vector[], int newSize)
{
vSize = newSize;
if (vSize > 0)
{
for (int i = 0; i < newSize; i++)
{
vArray[i] = vector[i];
}
}
else
{
vArray = NULL;
}
}
ostream &operator<<(ostream &leftOp, const VectorN& rightOp)
{
leftOp << "(";
for (int i = 0; i < rightOp.vSize; i++)
{
leftOp << rightOp.vArray[i] << ", ";
leftOp << rightOp.vArray[i];
}
leftOp << ")";
return leftOp;
}
float& VectorN::operator[](int i)
{
return vArray[i];
{
float VectorN:: operator[](int i) const
{
return vArray[i];
{
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Driver Program
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#include <iostream>
#include <stdexcept>
#include "VectorN.h"
using std::cout;
using std::endl;
using std::out_of_range;
int main()
{
int test = 1;
cout << "\nTest " << test++ << ": Default constructor and printing\n" << endl;
const VectorN v1;
cout << "v1: " << v1 << endl;
cout << "\nTest " << test++ << ": Array constructor and printing\n" << endl;
float ar2[] = {1.0, 2.0, 3.0};
const VectorN v2(ar2, 3);
cout << "v2: " << v2 << endl;
return 0;
}
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Last edited on
In the VectorN(float[], int) constructor you forgot to create the array that vArray should point to.
Thank you very much. That fixed the problem.
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