Destructor - String class

#include "stdafx.h"

#include <iostream>

#include <string>

#include <cfloat>

using namespace std;

class String {

private:

char *str;

unsigned int len;

public:

String();

String(const char *str);

String(const String &copy);

//String(const String &str);

~String();

const char *c_str();

};

int main() {

String str = "String";

cout << str.c_str() << endl;

return 0;

}

String::String(const char *str)

:str(0), len(0)

{

for (len = 0; str[len]; len++);

this->str = new char[len + 1];

for (unsigned int i = 0; i < len + 1; i++)

{

this->str[i] = str[i];

}

}

String::~String()

{

delete[] str;

len = 0;

}

const char *String::c_str()

{

return str;

}