Trying to create a Text Line class for c-strings - c++

Question

I am new to c++ and I'm having a bit of trouble implementing my first program. I need to create a Line class which simply contains an array of char (c-string) as well as a length and a max capacity. The linePtr member variable is of type char*. Here is what I have:
Line.h:
#pragma once
#ifndef LINE_H
#define LINE_H
#include <iostream>
using namespace std;
class Line {
private:
char* linePtr{nullptr};
int lineLength;
int lineCapacity;
public:
Line(); //default ctor
Line(char);
~Line();
friend ostream& operator<<(ostream& output, const Line& l);
};
#endif // !LINE_H
Line.cpp:
#include <iostream>
#include <cstring>
#include "Line.h"
using std::cout;
using std::endl;
using std::strcpy;
using std::strlen;
const int LINE_CAPACITY = 5000; //arbitrarily set
Line::Line() {
cout << "Default ctor" << endl;
linePtr = new char[1]{ '\0' };
lineCapacity = LINE_CAPACITY;
lineLength = 0;
}
Line::Line(char cstr) {
cout << "ctor Line(char cstr)" << endl;
linePtr = new char[2];
lineCapacity = LINE_CAPACITY;
lineLength = 1;
linePtr[0] = cstr;
}
ostream& operator<<(ostream& out, const Line& l) {
return out << l.linePtr;
}
Main.cpp:
#include <iostream>
#include "Line.h"
using namespace::std;
int main() {
Line l1;
cout << l1 << endl;
Line l2('x');
cout << l2 << endl;
system("pause");
return 0;
}
When I run with debugging, when the linePtr field it is written I get the message: "Error reading characters of string". I'm sure I'm doing something stupid but I can't figure it out.

Answer 1

You're not null-terminating the character array in the second constructor. Add this line at the end of the method:
linePtr[1] = '\0';