2023.4.27

//实验六任务2
//定义猫科动物Animal类，由其派生出猫类（Cat）和豹类（Leopard），
//在Animal类中定义虚函数，输出“My name is Animal”，在派生类中
//分别重新定义该函数，显示“My name is  **”，其中**为各自类名
#include <iostream>
#include <string>
using namespace std;
class Animal
{
public:
    virtual void name()
    {
        cout<<"My name is Animal"<<endl;
    }
};
class Cat:public Animal
{
public:
    void name()
    {
        cout<<"My name is Cat"<<endl;
    }
};
class Leopard:public Animal
{
public:
    void name()
    {
        cout<<"My name is Leopard"<<endl;
    }
};
void test()
{
    Cat c;
    Leopard l;
    c.name();
    l.name();
}
int main()
{
    test();
    return 0; 
}

 

//实验六任务4
#include <iostream>
#include <string>
using namespace std;
class Shape
{
    virtual void setvalues() = 0;
    virtual void floatarea() = 0;
};
class rectangle:public Shape
{
public:
    void setvalues()
    {
        cout<<"请输入矩形的底和高："<<endl;
        cin>>x>>y;
    }
    void floatarea()
    {
        cout<<"矩形的面积为："<<x*y<<endl;
    }
    float x;
    float y;
};
class arctangle:public Shape
{
public:
    void setvalues()
    {
        cout<<"请输入三角形的底和高："<<endl;
        cin>>x>>y;
    }
    void floatarea()
    {
        cout<<"三角形的面积为："<<x*y/2<<endl;
    }
    float x;
    float y;
};
class square:public Shape
{
public:
    void setvalues()
    {
        cout<<"请输入正方形的边长："<<endl;
        cin>>x;
    }
    void floatarea()
    {
        cout<<"正方形的面积为："<<x*x<<endl;
    }
    float x;
};
class circle:public Shape
{
public:
    void setvalues()
    {
        cout<<"请输入圆形的半径："<<endl;
        cin>>r;
    }
    void floatarea()
    {
        cout<<"圆形的面积为："<<3.1415*r*r<<endl;
    }
    float r;
};
void test()
{
    rectangle r;
    arctangle a;
    square s;
    circle c;
    r.setvalues();
    a.setvalues();
    s.setvalues();
    c.setvalues();
    if(r.x<=0||r.y<=0||a.x<=0||a.y<=0||s.x<=0||c.r<=0)
    {
        cout<<"Set Value Error!"<<endl;
        exit(0);
    }
    r.floatarea();
    a.floatarea();
    s.floatarea();
    c.floatarea();
}
int main()
{
    test();
    return 0;
}