第十七周报告

#include<iostream>    
#include<fstream> 
#include<string>
#include<iomanip>
using namespace std; 
class Student  
{  
public:  
	Student();
	Student(string name,int C_plus_plus,int Math,int English,int All_score,double Average);
	void set_name(string name);
	void set_C_plus_plus(int C_plus_plus);
	void set_Math(int Math);
	void set_English(int English);
	void set_All_score(int All_score);
	void set_Average(double Average);
	string get_name();
	int get_C_plus_plus();
	int get_Math();
	int get_English();
	int get_All_score();
	double get_Average();
	friend void high_C_plus_plus_score(Student  s[]);
	friend void high_Math_score(Student  s[]) ;
	friend void high_English_score(Student  s[]);
	friend void high_All_score(Student  s[]);
	friend void Descending_order(Student  s[]);//排序，降序；
	friend void All_score(Student  s[]);
	friend void Average_score(Student  s[]);
    friend ostream& operator << (ostream&,Student&); //重载流插入运算符“<<”  ;
	friend void insert_data(Student  s[]);
	friend void check_data();
private:         
    string name;
	int C_plus_plus;
	int Math;
	int English;
	int All_score;
	double Average;
};
void input_student(Student  s[]);
void ordered_student_dat(Student s[]);
int main()  
{  
	Student s1[101],s2,s3[1]; 
    input_student(s1);//读入100人的原始分数   
	//ordered_student_dat(s1);
	insert_data(s1);
	All_score(s1);
	Average_score(s1);
	cout<<"C++的最高分为：";
	high_C_plus_plus_score(s1);
	cout<<endl;
	cout<<"高数的最高分为：";
	high_Math_score(s1);
	cout<<endl;
	cout<<"英语的最高分为：";
	high_English_score(s1);
	cout<<endl;
	cout<<"总分的最高分为：";
	high_All_score(s1);
	cout<<endl;
	Descending_order(s1);
	ordered_student_dat(s1);
	check_data();
	cout<<endl;
	system("PAUSE");  
    return 0;  
}
Student::Student()
{
	name="unknow";
	C_plus_plus=0;
	Math=0;
	English=0;
	All_score=0;
	Average=0.0;
}
Student::Student(string name,int C_plus_plus,int Math,int English,int All_score,double Average)
{
	this->name=name;
	this->C_plus_plus=C_plus_plus;
	this->Math=Math;
	this->English=English;
	this->All_score=All_score;
	this->Average=Average;
}

void input_student(Student s[])  
{  
    int i=0; 
	string name;
	int C_plus_plus;
	int Math;
	int English;
	ifstream infile("score.dat",ios::in);
	if (!infile)
	{
		cerr<<"open error!"<<endl;
		exit(1);
	}
	for (i=0;i<101;i++)
	{
		infile>>name;
		s[i].set_name(name);
		infile>>C_plus_plus;
		s[i].set_C_plus_plus(C_plus_plus);
		infile>>Math;
		s[i].set_Math(Math);
		infile>>English;
		s[i].set_English(English);
	}
	infile.close();
	//cout<<endl;
	
}
void ordered_student_dat(Student s[])
{
	ofstream outfile("binary_score.dat",ios::out);
	if(!outfile)
	{
		cerr<<"open error!"<<endl;
		exit(1);
	}
//	outfile<<'\t'<<"\t"<<"\t"<<"\t"<<"姓名"<<'\t'<<'\t'<<"\t"<<"C++"<<"\t"<<"英语"<<"\t"<<"高数"<<"\t"<<"总分"<<"\t"<<"平均分"<<'\n'<<'\n';
	for(int i=0;i<101;i++)
		outfile<<'\t'<<"\t"<<"\t"<<"\t"<<s[i].get_name()<<'\t'<<'\t'<<"\t"<<s[i].get_C_plus_plus()<<"\t"<<s[i].get_Math()<<"\t"<<s[i].get_English()<<"\t"<<s[i].get_All_score()<<"\t"<<setiosflags(ios::fixed)<<setprecision(2)<<s[i].get_Average()<<'\n';
	outfile.close();
	return ;
}

void Student::set_name(string name)
{
	this->name=name;
}
void Student::set_C_plus_plus(int C_plus_plus)
{
	this->C_plus_plus=C_plus_plus;
}	
void Student::set_Math(int Math)
{
	this->Math=Math;
}
void Student::set_English(int English)
{
	this->English=English;
}
void Student::set_All_score(int All_score)
{
	this->All_score=All_score;
}
void Student::set_Average(double Average)
{
	this->Average=Average;
}
string Student::get_name()
{
	return name;
}
int Student::get_C_plus_plus()
{
	return C_plus_plus;
}
int Student::get_Math()
{
	return Math;
}
int Student::get_English()
{
	return English;
}
int Student::get_All_score()
{
	return All_score;
}
double Student::get_Average()
{
	return Average;
}

void high_C_plus_plus_score(Student  s[]) 
{
	Student student;
	int score;
	int i=0,j=0;
	string name;
	score=s[i].get_C_plus_plus();
	student.set_C_plus_plus(score);
	for(i=0;i<100;++i)
	{
		if(student.get_C_plus_plus()<s[i+1].get_C_plus_plus())
		{
			score=s[i+1].get_C_plus_plus();
			student.set_C_plus_plus(score);
			name=s[i+1].get_name();
			student.set_name(name);
		}
	}
	cout<<student.get_C_plus_plus()<<'\n';
	cout<<endl;
	cout<<"获得C++最高分的这几名同学叫：";
	for(i=0;i<101;++i)
	{
		if(student.get_C_plus_plus()==s[i].get_C_plus_plus())
			cout<<s[i].get_name()<<'\t';
	}
	cout<<'\n';
	return ;
}
void high_Math_score(Student  s[]) 
{
	Student student;
	int score,i=0;
	string name;
	score=s[i].get_Math();
	student.set_Math(score);
	for(i=0;i<100;++i)
	{
		if(student.get_Math()<s[i+1].get_Math())
		{
			score=s[i+1].get_Math();
			student.set_Math(score);
			name=s[i+1].get_name();
			student.set_name(name);
		}
	}
	cout<<student.get_Math()<<'\n';
	cout<<endl;
	cout<<"获得高数最高分的这几名同学叫：";
	for(i=0;i<101;++i)
	{
		if(student.get_Math()==s[i].get_Math())
			cout<<s[i].get_name()<<'\t';
	}
	cout<<'\n';
	return ;
}

void high_English_score(Student  s[]) 
{
	Student student;
	int score,i=0;
	string name;
	score=s[i+1].get_English();
	student.set_English(score);
	for(i=0;i<100;++i)
	{
		if(student.get_English()<s[i+1].get_English())
		{
			score=s[i+1].get_English();
			student.set_English(score);
			name=s[i+1].get_name();
			student.set_name(name);
		}
	}
	cout<<student.get_English()<<'\n';
	cout<<endl;
	cout<<"获得英语最高分的这几名同学叫：";
	for(i=0;i<101;++i)
	{
		if(student.get_English()==s[i].get_English())
			cout<<s[i].get_name()<<'\t';
	}
	cout<<'\n';
	return ;
}
void high_All_score(Student  s[]) 
{
	Student student;
	int score,i=0;
	string name;
	score=s[i].get_All_score();
	student.set_All_score(score);
	for(i=0;i<100;++i)
	{
		if(student.get_All_score()<s[i+1].get_All_score())
		{
			score=s[i+1].get_All_score();
			student.set_All_score(score);
			name=s[i+1].get_name();
			student.set_name(name);
		}
	}
	cout<<student.get_All_score()<<'\n';
	cout<<endl;
	cout<<"获得总分最高分的这几名同学叫：";
	for(i=0;i<101;++i)
	{
		if(student.get_All_score()==s[i].get_All_score())
			cout<<s[i].get_name()<<'\t';
	}
	cout<<'\n';
	return ;
}
void Descending_order(Student  s[]) 
{
	Student student;
	string name;
    int i,j;   
    for(i=0;i<101-1;i++) 
	{
        for(j=0;j<101-i-1;j++) 
		{
			if(s[j].get_All_score()<s[j+1].get_All_score())  
            {  
                student=s[j+1];  
                s[j+1]=s[j];  
                s[j]=student;  
            }  
		}
	}
	/*for (i=0;i<101;i++)  
	{  
		cout<<s[i].get_All_score()<<"  ";  
	}  */
}
void All_score(Student  s[]) 
{
	int score;
	for(int i=0;i<101;++i)
	{
		score=s[i].get_C_plus_plus()+s[i].get_Math()+s[i].get_English();
		s[i].set_All_score(score);
	}
	
}
void Average_score(Student  s[]) 
{
	double average;
	for(int i=0;i<101;++i)
	{
		average=double(s[i].get_C_plus_plus()+s[i].get_Math()+s[i].get_English())/3;
		s[i].set_Average(average);
	}
}

ostream& operator << (ostream&output,Student&s)  
{   
	if(s.get_C_plus_plus()!=0)
	{
		output<<s.get_C_plus_plus()<<'\t'<<"该同学名叫："<<s.get_name()<<endl;  
	}
	else if(s.get_Math()!=0)
	{
		output<<s.get_Math()<<'\t'<<"该同学名叫："<<s.get_name()<<endl;  
	}
	else if(s.get_English()!=0)
	{
		output<<s.get_English()<<'\t'<<"该同学名叫："<<s.get_name()<<endl;  
	}
	else
	{
		output<<s.get_All_score()<<'\t'<<"该同学名叫："<<s.get_name()<<endl;  
	}
    return output;  
} 
void insert_data(Student  s[])
{
	string name;
	int C_plus_plus;
	int Math;
	int English;
	cout<<"请输入您的姓名，C++成绩，高数成绩和英语成绩，中间以空格顿开："<<'\n';
	cin>>name>>C_plus_plus>>Math>>English;
	s[100].set_name(name);
	s[100].set_C_plus_plus(C_plus_plus);
	s[100].set_Math(Math);
	s[100].set_English(English);
	cout<<endl;
	/*-ifstream outfile("binary_score.dat",ios::in|ios::binary);//|ios::binary
	if(!outfile)
	{
		cerr<<"open error!"<<endl;
		abort( );
	}
	outfile<<s[100].get_name()<<s[100].get_C_plus_plus()<<s[100].get_Math()<<s[100].get_English();
	outfile.close();*/
}
void check_data()
{
	Student s[107];
	int i=0; 
	string name,str[6];
	int C_plus_plus;
	int Math;
	int English;
	int All_score;
	double Average;
	ifstream infile("binary_score.dat",ios::in);
	if (!infile)
	{
		cerr<<"open error!"<<endl;
		exit(1);
	}
/*	for (i=0;i<6;i++)
	{
		infile>>str[i];
	}*/
	for (i=0;i<107;i++)
	{
		infile>>name;
		s[i].set_name(name);
		infile>>C_plus_plus;
		s[i].set_C_plus_plus(C_plus_plus);
		infile>>Math;
		s[i].set_Math(Math);
		infile>>English;
		s[i].set_English(English);
		infile>>All_score;
		s[i].set_All_score(All_score);
		infile>>Average;
		s[i].set_Average(Average);
	}
	infile.close();
/*	for (i=0;i<6;i++)
	{
		cout<<str[i];
	}*/
	cout<<s[0].get_name()<<"\t"<<"\t"<<s[0].get_C_plus_plus()<<"\t"<<s[0].get_Math()<<"\t"<<s[0].get_English()<<"\t"<<s[0].get_All_score()<<"\t"<<setiosflags(ios::fixed)<<setprecision(2)<<s[0].get_Average()<<'\n';
	for(i=1;i<101;i++)
	cout<<s[i].get_name()<<'\t'<<"\t"<<s[i].get_C_plus_plus()<<"\t"<<s[i].get_Math()<<"\t"<<s[i].get_English()<<"\t"<<s[i].get_All_score()<<"\t"<<setiosflags(ios::fixed)<<setprecision(2)<<s[i].get_Average()<<'\n';

}