3-19.txt

思路很清晰的c++课件。例子很简明

例3.19 静态数据成员

#include <iostream.h>
class Student{
	static int count;		//静态数据成员
	int StudentNo;
public:
	Student()
	{	count++;
		StudentNo=count;
	}
	void print()
	{	cout<<"Student"<<StudentNo<<" ";
		cout<<"count="<<count<<endl;
	}
};

int Student::count=0;		//给静态数据成员count赋初值

void main()
{	Student s1;
	s1.print();
	cout<<"------\n";

	Student s2;
	s1.print();
	s2.print();
	cout<<"------\n";

	Student s3;
	s1.print();
	s2.print();
	s3.print();
	cout<<"------\n";
}