#include <iostream>
#include <cstring>
class CTString {
private:
    char *str;
    static int objectCount; // 静态成员变量，用于记录对象个数
public:
    CTString() {
        str = NULL; // or str = 0;
        objectCount++; // 增加对象计数
    }
CTString(const char *s) {
        str = new char[strlen(s) + 1];
        strcpy(str, s);
        objectCount++;
    }
~CTString() {
        objectCount--; // 先减少对象计数
        delete[] str; // 释放字符串内存
    }
void Print() {
        if (str)
            std::cout << str << std::endl;
        else
            std::cout << "空字符串" << std::endl;
    }
void Copy(const char *s) {
        delete[] str;
        str = new char[strlen(s) + 1];
        strcpy(str, s);
    }
static int getObjectCount() {
        return objectCount;
    }
};
int CTString::objectCount = 0; // 静态成员变量初始化
int main() {
    CTString *pstr;
    pstr = new CTString;
    pstr->Print();
    pstr->Copy("hello");
    pstr->Print();
std::cout << "总共创建的对象数量: " << CTString::getObjectCount() << std::endl;
delete pstr;
// 等待用户按下任意键后再退出
    std::cin.get();
return 0;
}