学步园

#include <iostream>
using namespace std;

class charArray
{
public:
	charArray(int len)
	{
		length = len;
		buffer = new char[length];
	}

	int getLength()
	{
		return length;
	}

	char & operator[](int i);
	
	~charArray()
	{
		delete[] buffer;
	}

private:
	int length;
	char *buffer;
};

char & charArray::operator[](int i)
{
	static char ch = 0;
	if(i>0 && i < length)
		return buffer[i];
	else
	{
		cout<<"out of range!"<<endl;
		return ch;
	}
}

int main()
{
	int i;
	charArray str1(8);
	char * str2 = "string";
	for(i=0;i<7;i++)
	{
		str1[i] = str2[i];
	}

	for(i = 0;i< 7;i++)
	{
		cout<<str1[i];
	}

	cout<<str1.getLength()<<endl;
	return 0;
}