P256学生类练习题

#include
#include
using namespace std;

class Student
{
public:
	Student(int number = 0, const char* name = "", float score = 0.0);//对于字符串，此处必须加const
	Student(const Student& Stu);
	~Student();
	
	void show(void);
	friend void Average(const Student* p, int length);
	friend void SetProperty(Student* p, int length);
private:
	int number;
	char name[20];
	float score;
};

Student::Student(int number, const char* name, float score)
{
	this->number = number;
	strcpy_s(this->name, strlen(name) + 1, name);
	this->score = score;
}

Student::Student(const Student& Stu)
{
	this->number = Stu.number;
	strcpy_s(this->name, strlen(Stu.name) + 1, Stu.name);
	this->score = Stu.score;
}


void Student::show(void) {
	cout << "学号：" << number << " 姓名：" << name << " 分数" << score << endl;
}
void Average(const Student* p,  int length) {
	double sum = 0;
	for (int i = 0; i < length; i++) {
		sum = sum + (p + i)->score;
	}
	cout<<"平均分"<number = i;
		cout << "学号：" << i << endl;
		cout << "姓名：";
		cin >> (p + i)->name;
		cout << "分数：";
		cin >> (p + i)->score;
		cout << endl;
	}
}
Student::~Student()
{
}


int main(void) {
	//Student S[3] = { Student(202001, "张三", 98),Student(202002, "李四", 88),Student(202003, "王五", 78)};
	//cout << average(S);
	Student* p = new Student[3];
	SetProperty(p, 3);
	Average(p,3);
	for (int i = 0; i < 3; i++) {
		(p + i)->show();
	}
	delete []p;


	return 0;
}