#include iostream#include 串使用命名空间标准;类 str私人：夏尔圣;公共：strconst char a集a ;str & operator = ___ 常量 STR &A_______ 1删除ST;设置ast;返回这个;void show圣恩德尔;~str删除ST;void setconst char s______st = 新字符strlens + 1______

#include #include using namespace std;

class str{ private: char* st; //存储字符串的数组指针 public: str(const char* a){ //构造函数，初始化字符串 st = new char[strlen(a) + 1]; strcpy(st, a); } str& operator=(const str& a){ //重载=运算符，实现字符串赋值 delete[] st; //先释放原有的字符串内存 st = new char[strlen(a.st) + 1]; //重新分配内存 strcpy(st, a.st); //复制字符串 return *this; } void show(){ //输出字符串 cout << st << endl; } ~str(){ //析构函数，释放内存 delete[] st; } };

int main(){ str s1("他"); str s2("她"); s1.show(); s2.show(); s2 = s1; s1.show(); s2.show(); system("pause"); return 0;