#define _CRT_SECURE_NO_WARNINGS #include<iostream> #include<string> #include<string.h> using namespace std; class student { private: long num; char* name; string major; char Class[4]; public: student(const char* nam); void show_stu(); }; student::student(const char* nam) { name = new char[strlen(nam) + 1]; strcpy(name, nam); cout << "分别输入学号和姓名: " << endl; cin >> num; cin >> name; cout << "输入专业:" << endl; cin >> major; cout << "输入班级:" << endl; cin >> Class[4]; } void student::show_stu() { cout << "学生信息： " << num << " " << name << endl; cout << " " << major << " " << Class[4] << endl; } class leader:public student { private: string position; public: leader(); }; leader::leader() { cout << "输入职位:" << endl; cin >> positon; } int main() { student a("fakeeeeee"); leader b("fakeeeeee"); a.show_stu(); b.show_stu(); return 0; }帮我修改上面代码

以下是修改后的代码：

#define _CRT_SECURE_NO_WARNINGS 
#include<iostream> 
#include<string> 
#include<string.h> 

using namespace std; 

class student { 
private: 
    long num; 
    char* name; 
    string major; 
    char Class[5]; 
public: 
    student(const char* nam, long n, string mj, const char* cls); 
    void show_stu(); 
    ~student(); 
}; 

student::student(const char* nam, long n, string mj, const char* cls) { 
    name = new char[strlen(nam) + 1]; 
    strcpy(name, nam); 
    num = n; 
    major = mj; 
    strcpy(Class, cls); 
} 

void student::show_stu() { 
    cout << "学生信息： " << num << " " << name << endl; 
    cout << "           " << major << " " << Class << endl; 
} 

student::~student() { 
    delete[] name; 
} 

class leader :public student { 
private: 
    string position; 
public: 
    leader(const char* nam, long n, string mj, const char* cls, string pos); 
    void show_leader(); 
}; 

leader::leader(const char* nam, long n, string mj, const char* cls, string pos) :student(nam, n, mj, cls) { 
    position = pos; 
} 

void leader::show_leader() { 
    show_stu(); 
    cout << "           " << position << endl; 
} 

int main() { 
    const char* name = "fakeeeeee"; 
    long num = 12345; 
    string major = "Computer Science"; 
    const char* Class = "A101"; 
    string position = "Monitor"; 

    student a(name, num, major, Class); 
    leader b(name, num, major, Class, position); 

    a.show_stu(); 
    b.show_leader(); 

    return 0; 
}

主要的修改如下：

1. 在 `student` 中增加了析构函数，避免内存泄漏。

2. 在 `student` 中的构造函数中，修正了 `Class` 数组越界的问题。

3. 在 `leader` 中的构造函数中，调用了 `student` 的构造函数，避免了重复输入学生信息的问题。

4. 在 `leader` 中增加了 `show_leader()` 函数，用于显示学生和领导的信息。