string.h

#ifndef STRING
#define STRING
#include <iostream>

using std::ostream;
using std::istream;

class String {
private:
	char *str;
	int len;
	static int num_strings;
	static const int CINLIM = 80;

public:
	String();
	String(const char *s);
	String(const String &s);
	~String();
	int length() const {return len;}

	String & operator=(const String &s);
	String & operator=(const char *s);
	char & operator[](int i);
	const char & operator[](int i) const;
	
	friend bool operator<(const String &s1, const String &s2);
	friend bool operator>(const String &s1, const String &s2);
	friend bool operator==(const String &s1, const String &s2);
	friend ostream & operator<<(ostream &os, const String &s);
	friend istream & operator>>(istream &is, String &s);

	static int HowMany();
};

#endif