#include <iostream>
//画笔抽象类
class Pen {
public:
virtual ~Pen();
public:
virtual void PrintProstect() const = 0;
virtual void PrintContext() const = 0;
};
Pen::~Pen() {}
//画笔A
class PenA : public Pen {
public:
virtual ~PenA() override;
public:
virtual void PrintProstect() const override;
virtual void PrintContext() const override;
};
PenA::~PenA() {}
void PenA::PrintProstect() const { std::cout << "*"; }
void PenA::PrintContext() const { std::cout << "@"; }
//画笔B
class PenB : public Pen {
public:
virtual ~PenB() override;
public:
virtual void PrintProstect() const override;
virtual void PrintContext() const override;
};
PenB::~PenB() {}
void PenB::PrintProstect() const { std::cout << "!"; }
void PenB::PrintContext() const { std::cout << "#"; }
//图形抽象类
class Graph {
public:
Graph(Pen& Pen);
virtual ~Graph();
public:
virtual void Print() const = 0;
protected:
Pen& _pen;
};
Graph::Graph(Pen& pen) : _pen(pen) {}
Graph::~Graph() {}
//三角形
class Triange : public Graph {
public:
Triange(Pen& Pen, int length);
virtual ~Triange() override;
public:
virtual void Print() const override;
private:
int _length;
};
Triange::Triange(Pen& pen, int length) : Graph(pen), _length(length) {}
Triange::~Triange() {}
void Triange::Print() const {
int between = 1;
int edge = _length / 2;
int num = _length / 2;
for(int i = 1; i <= num; ++i) {
for(int j = 1; j <= edge; ++j) {
_pen.PrintContext();
}
for(int k = 1; k <= between; ++k) {
_pen.PrintProstect();
}
for(int j = 1; j <= edge; ++j) {
_pen.PrintContext();
}
std::cout << std::endl;
between+=2;
--edge;
}
}
//正方形
class Shape : public Graph {
public:
Shape(Pen& pen, int wide, int high);
virtual ~Shape() override;
public:
virtual void Print() const override;
private:
int _wide;
int _high;
};
Shape::Shape(Pen& pen, int wide, int high) : Graph(pen), _wide(wide), _high(high) {}
Shape::~Shape() {}
void Shape::Print() const {
for(int j = 1; j <= _high; ++j) {
for(int i = 1; i <= _wide; ++i) {
_pen.PrintProstect();
}
std::cout << std::endl;
}
}
int main()
{
PenA pen_a;
PenB pen_b;
Triange triange1(pen_a, 10);
triange1.Print();
Triange triange2(pen_b, 10);
triange2.Print();
Shape shape1(pen_a, 10, 5);
shape1.Print();
Shape shape2(pen_b, 10, 5);
shape2.Print();
}
运行结果：
@@@@@*@@@@@ @@@@***@@@@ @@@*****@@@ @@*******@@ @*********@ #####!##### ####!!!#### ###!!!!!### ##!!!!!!!## #!!!!!!!!!# ********** ********** ********** ********** ********** !!!!!!!!!! !!!!!!!!!! !!!!!!!!!! !!!!!!!!!! !!!!!!!!!!