//File        : MyString.h
//Author      : Andre Long
//Due         : October 20, 2004
//Description : This header file comes from 14.7 in book which will be used with
//              CH14pc4


#ifndef MYSTRING_H
#define MYSTRING_H
#include<iostream>
using namespace std;


class MyString;                               //Forward declaration
ostream &operator<<(ostream &, MyString &);
istream &operator>>(istream &, MyString &);

class MyString
{
private:
	char *str;
	int len;

public:
	MyString()                               //Default constructor
	{ 
		str = NULL;
		len = 0;
	}

	MyString(MyString &right)               //Copy constructor
	{
		str = new char[right.length() + 1];
	   strcpy(str, right.getValue());
	   len = right.length();
		
	}

	MyString(char *sptr)                   //C-string constructor
	{
       len = strlen(sptr);
	   str = new char[len + 1];
	   strcpy(str, sptr);
	}

	~MyString()                           //Destructor
	{
       if(len != 0)
		   delete[] str;
	}

	int length()                          //Returns the string length
	{ return len; }

	char *getValue()                      //Returns the string
	{ return str; }

	MyString operator+=(MyString &);
	char *operator+=(const char *);
	MyString operator=(MyString &);
	char *operator=(const char *);
	int operator==(MyString &);
	int operator==(const char *);
	int operator!=(MyString &);
	int operator!=(const char *);
	bool operator>(MyString &);
	bool operator>(const char *);
	bool operator<(MyString &);
	bool operator<(const char *);
	bool operator>=(MyString &);
	bool operator>=(const char *);
	bool operator<=(MyString &);
	bool operator<=(const char *);
	friend ostream &operator<<(ostream &, MyString &);
	friend istream &operator>>(istream &, MyString &);

};
#endif