mycal.h

使用C++编写的计算器,包括所有的一般计算功能。

#define PI 3.141592653590
#define e 2.718281828183

using namespace std;

class MyOperator
{
public:
	MyOperator(){_name="";_pm=0;_index=0;}
	MyOperator(CString name,int pm,int index){_name=name;_pm=pm;_index=index;}
	CString GetName(){return _name;}
	int GetPM(){return _pm;}
	int GetIndex(){return _index;}
private:
	CString _name;	//运算符名称
	int _pm;	//几目运算符
	int _index;	//索引
};

extern enum Compare;

class MyCal
{
public:
	MyCal()
	{
	}
	double StringToDouble(CString str);
	Compare GetPriority(int preop,int postop);
	double CalculateAll();
	double Calculate();
	void InitStack();
	void PushOptr(MyOperator myop);
	void PushOpnd(double mynum);
	CString GetResult();

private:
	stack<MyOperator> optr;	//运算符栈
	stack<double> opnd;	//数字栈
};