state1.txt

来自「C++课件,很好用的,帮助大家学习C++.」· 文本 代码 · 共 23 行

class Context{
private:
	Color state;
	void push(){
		//如果当前red 状态 就切换到blue
		if (state==Color.red) state=Color.blue;
		//如果当前blue 状态 就切换到green
		else if (state==Color.blue) state=Color.green;
		//如果当前black 状态 就切换到red
		else if (state==Color.black) state=Color.red;
		//如果当前green 状态 就切换到black
		else if (state==Color.green) state=Color.black;
		Sample sample=new Sample(state);
	}
void pull(){
		//与push 状态切换正好相反
		if (state==Color.green) state=Color.blue;
		else if (state==Color.black) state=Color.green;
		else if (state==Color.blue) state=Color.red;
		else if (state==Color.red) state=Color.black;
		Sample2 sample2=new Sample2(state);
	}
};