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学生管理程序代码

// 学生管理程序.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream.h>
#include <string.h>
#include <process.h>

class Person
{
	friend class Class;
private:
	char *name;
	char *sex;
	int age;
public:
	Person();
	void setPerson(char *n1, char *n2, int a);
	virtual ~Person();
	virtual void print();
};

Person::Person()
{
	name=new char[10];
	sex=new char[10];
	age=18;
}

void Person::setPerson(char *n1, char *n2, int a)
{
	name =new char[strlen(n1)+1];
	sex =new char[strlen(n2)+1];
	strcpy(name,n1);
	strcpy(sex,n2);
	age=a;
}

Person::~Person()
{
	delete []name;
	delete []sex;
}

void Person::print()
{
	cout<<"\n姓名："<<name<<endl;
	cout<<"性别："<<sex<<endl;
	cout<<"年龄："<<age<<endl;
}


class Teacher: public Person
{
private:
	char *post;
	int classes;
public:
	Teacher();
	void setTeacher(char *n1, char *n2, char *n3, int a, int b);
	virtual ~Teacher();
	virtual void print();
};

Teacher::Teacher()
{
	post=new char[10];
	classes=0;
}

void Teacher::setTeacher(char *n1, char *n2, char *n3, int a,int b)
{
	setPerson(n1, n2, a);
	post =new char[strlen(n3)+1];
	strcpy(post,n3);
	classes=b;
}

Teacher::~Teacher()
{
	delete []post;
}

void Teacher::print()
{
	Person::print();
	cout<<"职称："<<post<<endl;
}



class Student: public Person
{
	friend Class;
private:
	float math, phy, che;
	static int totalStudent;
public:
	Student();
	setStudent(char *n1, char *n2, int a, float c1, float c2, float c3);
	virtual ~Student();
	void exchange(Student&,Student&);
	static int getTotalStudent();
	virtual void print();
};

int Student::totalStudent=0;

Student::Student()
{
	math=0;
	phy=0;
	che=0;
	totalStudent++;
}

Student::setStudent(char *n1, char *n2, int a, float c1, float c2, float c3)
{
	setPerson(n1, n2, a);
	math=c1;
	phy=c2;
	che=c3;
}

void Student::exchange(Student &a,Student &b)		
{
	Student temp;

	temp.math=b.math;
	b.math=a.math;
	a.math=temp.math;

	temp.phy=b.phy;
	b.phy=a.phy;
	a.phy=temp.phy;

	temp.che=b.che;
	b.che=a.che;
	a.che=temp.che;
}

void Student::print()
{
	Person::print();
	cout<<"该生成绩："<<endl;
	cout<<"数学："<<math;
	cout<<"\t物理："<<phy;
	cout<<"\t化学："<<che<<endl;
}

Student::~Student()
{
	totalStudent--;
}

int Student::getTotalStudent()
{
	return totalStudent;
}

class Class
{
	friend class Control;
public:
	Class();
	~Class();
	void creatStu();
	void showMath1();
	void showMath2();
	void showPhy1();
	void showPhy2();
	void showChe1(); 
	void showChe2();

private:
	int sum;                             
	Student *stu;                        
	int classnum;
	static int totalClass;
};

int Class::totalClass=0;

void Class::creatStu()					       
{	
	totalClass++;
	Student::totalStudent+=sum;
	stu= new Student[sum];										
	for(int i=0;i<sum;i++)
	{
		char *n1=new char[10], *n2=new char[10];
		int a;
		float c1, c2, c3;
		cout<<"\n请输入第 "<<i+1<<"个学生的姓名：";
		cin>>n1;
		cout<<"请输入性别：（男/女）";
		cin>>n2;
		bool flag=true;
		while(flag==true)
		{
			if(strcmp(n2,"男")==0||strcmp(n2,"女")==0)
			flag=false;
			else
			{
				cout<<"请重新输入性别：（男/女）";
				cin>>n2;
			}
		}
		cout<<"请输入年龄：";
		cin>>a;
		cout<<"请输入数学成绩：";
		cin>>c1;
		cout<<"请输入物理成绩：";
		cin>>c2;
		cout<<"请输入化学成绩：";
		cin>>c3;
		stu[i].setStudent(n1, n2, a, c1, c2, c3);
	}
}

Class::Class()                                
{
	classnum=totalClass+1;
	cout<<"\n请输入 "<<classnum<<" 班的人数：";
	cin>>sum;
	creatStu();
}

Class::~Class()
{
	delete []stu;
	totalClass--;
}

void Class::showMath1()						
{
	for(int i=0;i<sum;i++)
	{
		for(int j=i+1;j<sum;j++) 
		{
			if(stu[i].math<stu[j].math) 
			stu[i].exchange(stu[i],stu[j]);
		}
	}
	for(int k=0;k<sum;k++)
		stu[k].print();
}

void Class::showMath2()						
{
	for(int i=0;i<sum;i++)
	{
		for(int j=i+1;j<sum;j++) 
		{
			if(stu[i].math>stu[j].math) 
			stu[i].exchange(stu[i],stu[j]);
		}
	}
	for(int k=0;k<sum;k++)
		stu[k].print();
}

void Class::showPhy1()
{	
	for(int i=0;i<sum;i++)
	{
		for(int j=i+1;j<sum;j++) 
		{
			if(stu[i].phy<stu[j].phy)
			stu[i].exchange(stu[i],stu[j]);
		}
		stu[i].print();
	}
}

void Class::showPhy2()
{	
	for(int i=0;i<sum;i++)
	{
		for(int j=i+1;j<sum;j++) 
		{
			if(stu[i].phy>stu[j].phy)
			stu[i].exchange(stu[i],stu[j]);
		}
		stu[i].print();
	}
}

void Class::showChe1()	
{
	for(int i=0;i<sum;i++) 
	{
		for(int j=i+1;j<sum;j++) 
		{
			if(stu[i].che<stu[j].che)
			stu[i].exchange(stu[i],stu[j]);
		}
		stu[i].print();
	}
}

void Class::showChe2()	
{
	for(int i=0;i<sum;i++) 
	{
		for(int j=i+1;j<sum;j++) 
		{
			if(stu[i].che>stu[j].che)
			stu[i].exchange(stu[i],stu[j]);
		}
		stu[i].print();
	}
}

class Control
{
public:
	void menu();
	~Control();
	void showInfo(Class);
private:
	int classAll,teacAll;
	Teacher *teac;
	Student *stu;
	Class *clas;
};

void Control::showInfo(Class classtemp)
{
	stu=classtemp.stu;
	for(int i=0;i<classtemp.sum;i++)
	{
		stu[i].print();
	}
}

Control::~Control()
{
	delete []stu;
	delete []teac;
	delete []clas;
}

void Control::menu()
{
label1:
	cout<<"*************学生成绩管理系统*****************"<<endl;
	cout<<"1.创建"<<endl;
	cout<<"2.查询"<<endl;
	cout<<"3.退出"<<endl;
	int a;
	cout<<"请选择(1-3):";
	cin>>a;
label2:
	switch(a)
	{
	case 1:
		cout<<"-----------------------"<<endl;
		cout<<"1.输入班级信息"<<endl;
		cout<<"2.输入老师信息"<<endl;
		cout<<"3.放弃(返回上一层)"<<endl;
		int b;
		cout<<"请选择(1-3):";
		cin>>b;
		switch(b)
		{
		case 1:
			if(classAll>0) 
				cout<<"班级已经创建!"<<endl;
			else
				{
					cout<<"总共几个班？";
					cin>>classAll;
					clas= new Class[classAll];
				}
			goto label2;
		case 2:
			if(teacAll>0) 
				cout<<"教师已经创建!"<<endl;
			else 
				{
				cout<<"总共多少个教师？";
				cin>>teacAll;
				teac= new Teacher[teacAll];
				for(int i=0;i<teacAll;i++)
				{
					char *n1=new char[10], *n2=new char[10], *n3=new char[10];
					int a, b;
					cout<<"\n请输入第 "<<i+1<<"个老师的姓名：";
					cin>>n1;
					cout<<"请输入性别：（男/女）";
					cin>>n2;
					bool flag=true;
					while(flag==true)
					{
						if(strcmp(n2,"男")==0||strcmp(n2,"女")==0)
						flag=false;
						else
						{
							cout<<"请重新输入性别：（男/女）";
							cin>>n2;
						}
					}
					cout<<"请输入年龄：";
					cin>>a;
					cout<<"请输入班级：";
					cin>>b;
					cout<<"请输入教师职称：";
					cin>>n3;
					teac[i].setTeacher(n1, n2, n3, a, b);
				}
			}
			goto label2;
		case 3:
			goto label1;
		default:
			cout<<"请按要求重新输入!"<<endl;
			goto label2;
		}
	case 2:
label3:
		cout<<"-----------------------"<<endl;
		cout<<"请输入要查询的内容:"<<endl;
		cout<<"1.老师信息(包含职称)"<<endl;
		cout<<"2.学生信息(包含成绩)"<<endl;
		cout<<"3.系统内人员构成"<<endl;
		cout<<"4.放弃(返回上一层)"<<endl;
		int d;
		cout<<"请选择(1-4):";
		cin>>d;
		switch(d)
		{
		case 1:
			if(teacAll<0)
			cout<<"\n老师尚未创建!"<<endl;
			else
			{
				cout<<"老师:"<<endl;
				for(int j=0;j<teacAll;j++)
					teac[j].print();
				cout<<"\n共有"<<teacAll<<"个老师。"<<endl;
			}
			goto label3;
		case 2:
label4:
			cout<<"-----------------------"<<endl;
			cout<<"1.按各班数学成绩从高到低排序"<<endl;
			cout<<"2.按各班数学成绩从低到高排序"<<endl;
			cout<<"3.按各班物理成绩从高到低排序"<<endl;
			cout<<"4.按各班物理成绩从低到高排序"<<endl;
			cout<<"5.按各班化学成绩从高到低排序"<<endl;
			cout<<"6.按各班化学成绩从低到高排序"<<endl;
			cout<<"7.放弃(返回上一层)"<<endl;
			int e;
			cout<<"请选择(1-7):";
			cin>>e;
			switch(e)
			{
			case 1:
				if(classAll<0)
				cout<<"\n学生尚未创建!"<<endl;
				else 
				{
					for(int i=0;i<classAll;i++)
					{
						cout<<"\n"<<i+1<<"班的学生："<<endl;
						clas[i].showMath1();;
					}
				}
				goto label4;
			case 2:
				if(classAll<0)
				cout<<"\n学生尚未创建!"<<endl;
				else 
				{
					for(int i=0;i<classAll;i++)
					{
						cout<<"\n"<<i+1<<"班的学生："<<endl;
						clas[i].showMath2();
					}
				}
				goto label4;
			case 3:
				if(classAll<0)
				cout<<"\n学生尚未创建!"<<endl;
				else 
				{
					for(int i=0;i<classAll;i++)
					{
						cout<<"\n"<<i+1<<"班的学生："<<endl;
						clas[i].showPhy1();
					}
				}
				goto label4;
			case 4:
				if(classAll<0)
				cout<<"\n学生尚未创建!"<<endl;
				else 
				{
					for(int i=0;i<classAll;i++)
					{
						cout<<"\n"<<i+1<<"班的学生："<<endl;
						clas[i].showPhy2();
					}
				}
				goto label4;
			case 5:
				if(classAll<0)
				cout<<"\n学生尚未创建!"<<endl;
				else 
				{
					for(int i=0;i<classAll;i++)
					{
						cout<<"\n"<<i+1<<"班的学生："<<endl;
						clas[i].showChe1();
					}
				}
				goto label4;
			case 6:
				if(classAll<0)
				cout<<"\n学生尚未创建!"<<endl;
				else 
				{
					for(int i=0;i<classAll;i++)
					{
						cout<<"\n"<<i+1<<"班的学生："<<endl;
						clas[i].showChe2();
					}
				}
				goto label4;
			case 7:
				goto label3;
			default:
				cout<<"请按要求重新输入!"<<endl;
				goto label4;
			}
		case 3:
			cout<<"-----------------------"<<endl;
			if(classAll<0)
			cout<<"\n学生尚未创建!"<<endl;
			else 
			{
				cout<<"\n共有"<<Student::getTotalStudent()/2<<"个学生。"<<endl;
				cout<<"\n共有"<<classAll<<"个班级。"<<endl;
			}
			if(teacAll<0)
			cout<<"\n老师尚未创建!"<<endl;
			else
			cout<<"\n共有"<<teacAll<<"个老师。"<<endl;
			goto label3;
		case 4:
			goto label1;
		default:
			cout<<"请按要求重新输入!"<<endl;
			goto label3;
		}
	case 3:
		exit(1);
	default:
		cout<<"请按要求重新输入!"<<endl;
		goto label1;
		}
	}


void main(int argc, char* argv[])
{
	Control con;
	con.menu();
}