指出代码错误并修改#include<iostream> using namespace std; #include<cstring> class Teacher { public: Teacher() { } Teacher(char *p,int a) { pname=new char[strlen(p)+1]; strcpy(pname,p); age=a; } Teacher(Teacher &t) { pname=new char[strlen(t.pname)+1]; strcpy(pname,t.pname); age=t.age; } Teacher& operator =(Teacher &t) { delete []pname; pname=new char[strlen(t.pname)+1]; strcpy(pname,t.pname); age=t.age; return *this; } ~Teacher() { delete []pname; } void Disp() { cout<<"Teacher:"<<pname<<","<<age<<endl; } private: char *pname; //存名字的地址 int age; }; class Student { public: Student() { } Student(char *n,int s) { strcpy(name,n); score=s; } void Disp() { cout<<"Student:"<<name<<","<<score<<endl; } protected: char name[10]; int score; }; class Tutor { public: Tutor() { } Tutor(char *n1,int s,char *n2,int a):s(n1,s),t(n2,a) { num=0; } Tutor(Tutor &t):s(t.s),t(t.t) { num=t.num; } void Date() { num++; } void Disp() { s.Disp(); t.Disp(); cout<<"Num:"<<num<<endl; } protected: Student s; Teacher t; int num;//存储师生会面次数 }; int main() { char name1[15],name2[15]; int score,age; cin>>name1>>score>>name2>>age; Tutor tt1(name1,score,name2,age),tt2; tt1.Disp(); tt1.Date(); //师生碰面一次 tt2=tt1; //此处调用的哪段代码？ tt2.Disp(); Tutor tt3=tt1; //此处调用的哪段代码？ tt3.Date(); tt3.Disp(); return 0; }

代码错误已经指出并修改，如下：

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

class Teacher {
public:
    Teacher() {
        pname = NULL;
        age = 0;
    }
    Teacher(char *p, int a) {
        pname = new char[strlen(p) + 1];
        strcpy(pname, p);
        age = a;
    }
    Teacher(Teacher &t) {
        pname = new char[strlen(t.pname) + 1];
        strcpy(pname, t.pname);
        age = t.age;
    }
    Teacher& operator =(Teacher &t) {
        if (this != &t) {
            delete[] pname;
            pname = new char[strlen(t.pname) + 1];
            strcpy(pname, t.pname);
            age = t.age;
        }
        return *this;
    }
    ~Teacher() {
        delete[] pname;
    }
    void Disp() {
        cout << "Teacher:" << pname << "," << age << endl;
    }
private:
    char *pname;  //存名字的地址
    int age;
};

class Student {
public:
    Student() {
        name[0] = '\0';
        score = 0;
    }
    Student(char *n, int s) {
        strcpy(name, n);
        score = s;
    }
    void Disp() {
        cout << "Student:" << name << "," << score << endl;
    }
protected:
    char name[10];
    int score;
};

class Tutor {
public:
    Tutor() {
        num = 0;
    }
    Tutor(char *n1, int s, char *n2, int a) :s(n1, s), t(n2, a) {
        num = 0;
    }
    Tutor(Tutor &t) :s(t.s), t(t.t) {
        num = t.num;
    }
    void Date() {
        num++;
    }
    void Disp() {
        s.Disp();
        t.Disp();
        cout << "Num:" << num << endl;
    }
protected:
    Student s;
    Teacher t;
    int num;//存储师生会面次数
};

int main() {
    char name1[15], name2[15];
    int score, age;
    cin >> name1 >> score >> name2 >> age;
    Tutor tt1(name1, score, name2, age), tt2;
    tt1.Disp();
    tt1.Date();    //师生碰面一次
    tt2 = tt1;     //调用的是Tutor类的默认拷贝赋值函数
    tt2.Disp();
    Tutor tt3 = tt1; //调用的是Tutor类的拷贝构造函数
    tt3.Date();
    tt3.Disp();
    return 0;
}

需要注意的是，构造函数和析构函数中要对类中动态分配的内存进行管理和释放，拷贝构造函数和拷贝赋值函数中要进行深拷贝操作，保证不同对象之间的数据互不影响。此外，在main函数中，对象的拷贝构造和拷贝赋值调用时需要特别注意。