:给以下代码中的Worker类添加一个复制构造函数,完成对象的复制功能。 Class Worker{ public: Worker(int n,string name1,float s); void show( ); private: int num; string name; float salary; }; Worker::Wor
时间: 2024-04-01 19:33:13 浏览: 83
ker(int n, string name1, float s) { num = n; name = name1; salary = s; } void Worker::show() { cout << "num: " << num << endl; cout << "name: " << name << endl; cout << "salary: " << salary << endl; } Worker::Worker(const Worker& other){ num = other.num; name = other.name; salary = other.salary; }
复制构造函数的定义如上所示,其参数类型为const Worker&,表示传入一个常量引用,即传入一个已存在的Worker对象的引用,用于初始化新创建的Worker对象。在函数体内,将传入对象的成员变量值赋值给当前对象对应的成员变量即可完成对象的复制。
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:给以下代码中的Worker类添加一个复制构造函数,完成对象的复制功能。 Class Worker{ public: Worker(int n,string name1,float s); void show( ); private: int num; string name; float salary; }; Worker::Worker(int n,string name1,float s) { num = n; name=name1; salary = s; } void Worker::show( ) { cout<<”num:”<<num<<endl; cout<<”name:”<<name<<endl; cout<<”salary:”<<salary<<endl; } int main( ) { Worker worker1(1,”张三”,4000);//定义对象时直接初始化 work1.show( ); return 0; }
好的,下面是添加复制构造函数后的Worker类的代码:
```c++
#include <iostream>
using namespace std;
class Worker{
public:
Worker(int n,string name1,float s);
Worker(const Worker& w); // 复制构造函数
void show( );
private:
int num;
string name;
float salary;
};
Worker::Worker(int n,string name1,float s) {
num = n;
name=name1;
salary = s;
}
// 复制构造函数的实现
Worker::Worker(const Worker& w) {
num = w.num;
name = w.name;
salary = w.salary;
}
void Worker::show( ) {
cout<<"num:"<<num<<endl;
cout<<"name:"<<name<<endl;
cout<<"salary:"<<salary<<endl;
}
int main( ) {
Worker worker1(1,"张三",4000);//定义对象时直接初始化
worker1.show( );
// 使用复制构造函数复制对象
Worker worker2(worker1);
worker2.show();
return 0;
}
```
这里我们添加了一个名为`Worker::Worker(const Worker& w)`的复制构造函数,它接受一个Worker对象作为参数,用于复制对象。在实现中,我们将传入的对象的num、name、salary属性分别复制给当前对象的对应属性即可。在`main()`函数中,我们先定义了一个Worker对象`worker1`,并输出了它的信息。然后使用复制构造函数将`worker1`复制给了`worker2`,最后再输出一遍`worker2`的信息,可以看到它与`worker1`一模一样。
设计person类,包括私有数据成员:姓名;设计student类继承person类,新增私有数据成员:班级;设计类worker继承person类,新增私有数据成员:职业;设计类studentworker继承student类和worker类,新增私有数据成员:工资;在主函数中定义一个studentworker类的对象,调用该对象的show函数输出该对象的信息。
好的,下面是题目要求的四个类的定义:
```c++
#include <iostream>
#include <string>
using namespace std;
class Person {
public:
Person(const string& name) : m_name(name) {}
virtual void show() const {
cout << "Name: " << m_name << endl;
}
private:
string m_name;
};
class Student : public Person {
public:
Student(const string& name, const string& cls) : Person(name), m_cls(cls) {}
virtual void show() const {
Person::show();
cout << "Class: " << m_cls << endl;
}
private:
string m_cls;
};
class Worker : public Person {
public:
Worker(const string& name, const string& job) : Person(name), m_job(job) {}
virtual void show() const {
Person::show();
cout << "Job: " << m_job << endl;
}
private:
string m_job;
};
class StudentWorker : public Student, public Worker {
public:
StudentWorker(const string& name, const string& cls, const string& job, double salary)
: Student(name, cls), Worker(name, job), m_salary(salary) {}
virtual void show() const {
Student::show();
Worker::show();
cout << "Salary: " << m_salary << endl;
}
private:
double m_salary;
};
```
在这个实现中,我们使用了继承和多重继承来实现类的关系。Student类和Worker类都继承自Person类,StudentWorker类则同时继承Student类和Worker类。
在主函数中,我们可以定义一个StudentWorker对象,并调用它的show()函数来输出该对象的信息:
```c++
int main() {
StudentWorker sw("Alice", "Class 1", "Teacher", 5000.0);
sw.show();
return 0;
}
```
输出结果如下:
```
Name: Alice
Class: Class 1
Name: Alice
Job: Teacher
Salary: 5000
```
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