9_2.cpp

vc++的实验和实训例子非常适合初学者学习和阅读

#include<iostream.h>
#include<iomanip.h>
#include<string.h>
class student
{
	char name[10];
	int deg1,deg2,deg3;
public:
	student(){deg1=deg2=deg3=0;}
	student(char na[],int d1,int d2,int d3)
	{
		strcpy(name,na);
		deg1=d1;deg2=d2;deg3=d3;
	}
	friend student operator+(student s1,student s2)
	{
		static student st;
		st.deg1=s1.deg1+s2.deg1;
		st.deg2=s1.deg2+s2.deg2;
		st.deg3=s1.deg3+s2.deg3;
		return st;
	}
	void disp()
	{
		cout<<setw(10)<<name<<setw(5)<<deg1
			<<setw(5)<<deg2<<setw(5)<<deg3<<endl;
	}
	friend void avg(student &s,int n)
	{
		cout<<setw(10)<<"平均分"<<setw(5)<<s.deg1/n
			<<setw(5)<<s.deg2/n<<setw(5)<<s.deg3/n<<endl;
	}
};
void main()
{
	student s1("Zhao",68,78,88),
			s2("Qian",69,76,84),
			s3("Sun",66,73,86),
			s4("Li",65,71,82),s;
	cout<<"输出结果为："<<endl;
	s1.disp();
	s2.disp();
	s3.disp();
	s4.disp();
	s=s1+s2+s3+s4;
	avg(s,4);
}