day41

#include 
 
using namespace std;
class shape
{
protected:
    int c;
    int s;
public:
    shape(){}
    shape(int c,int s):c(c),s(s)
    {
        cout<<"有参构造"<
    }
    ~shape()
    {
        cout<<"析构函数"<
    }
    void show()
    {
        cout<<"周长="<" 面积="<
    }
};
class circle:public shape
{
private:
    int ri;
public:
    circle(){}
    circle(int r):ri(r)
    {
        c=2*3.14*ri;
        s=3.14*ri*ri;
        cout<<"有参构造"<
    }
    ~circle()
    {
        cout<<"析构函数"<
    }
    void display()
    {
        cout<<"circle::周长="<" circle::面积="<
    }
};
class rect:public circle
{
private:
    int len;
    int high;
public:
    rect(){}
    rect(int l,int h):len(l),high(h)
    {
        c=2*(len+high);
        s=len*high;
        cout<<"有参构造"<
    }
    ~rect()
    {
        cout<<"析构函数"<
    }
    void display1()
    {
        cout<<"rect::周长="<" rect::面积="<
    }
};
 
int main()
{
    shape s1(5,6);
    s1.show();
    circle s2(4);
    s2.display();
    rect s3(5,6);
    s3.display1();
    return 0;
}