C++实例 MySTLString

Posted 2022-02-03 codeworkerliming

#include <iostream>
#include <cstring>
#include <string>
using namespace std;

class MySTLString

	public:
		MySTLString();
		MySTLString(int count, char ch);
		MySTLString(const char* s);
		const char& front() const;
		const char& back() const;
		int size() const;

	private:
		char* data_;
;

MySTLString :: MySTLString() : data_(new char[1])

	*data_ = ‘\0‘;



MySTLString :: MySTLString(const char* s) : data_(new char[strlen(s) + 1])

	strcpy(data_, s);


const char& MySTLString::front() const

	return data_[0];


int MySTLString::size() const

	return strlen(data_);


int main(void)

	MySTLString str("Hello");
	cout << str.front() << endl;
	cout << str.size()<<endl;

	return 0;