4elist2108.cpp

《21天学通C＋＋》附盘的原代码。书上的每个例子在这里都有相应的C语言程序。

#include <iostream>
using namespace std;
#include <string.h>

enum STATUS { FullTime, PartTime } ;
enum GRADLEVEL { UnderGrad, Grad } ;
enum HOUSING { Dorm, OffCampus };
enum FOODPLAN { OneMeal, AllMeals, WeekEnds, NoMeals };

class student
{
public:
	student():
		myStatus(FullTime),
		myGradLevel(UnderGrad),
		myHousing(Dorm),
		myFoodPlan(NoMeals)
	{}
	~student(){}
	STATUS GetStatus();
	void SetStatus(STATUS);
	unsigned GetPlan() { return myFoodPlan; }

private:
	unsigned myStatus : 1;
	unsigned myGradLevel: 1;
	unsigned myHousing : 1;
	unsigned myFoodPlan : 2;
};

STATUS student::GetStatus()
{
	if (myStatus)
		return FullTime;
	else
		return PartTime;
}

void student::SetStatus(STATUS theStatus)
{
	myStatus = theStatus;
}

int main()
{
	student Jim;

	if (Jim.GetStatus()== PartTime)
		cout << "Jim is part time" << endl;
	else
		cout << "Jim is full time" << endl;

	Jim.SetStatus(PartTime);

	if (Jim.GetStatus())
		cout << "Jim is part time" << endl;
	else
		cout << "Jim is full time" << endl;

	cout << "Jim is on the " ;

	char Plan[80];
	switch (Jim.GetPlan())
	{
	case OneMeal: strcpy(Plan,"One meal"); break;
	case AllMeals: strcpy(Plan,"All meals"); break;
	case WeekEnds: strcpy(Plan,"Weekend meals"); break;
	case NoMeals: strcpy(Plan,"No Meals");break;
	default : cout << "Something bad went wrong!\n"; break;
	}
	cout << Plan << " food plan." << endl;
	return 0;
}