C++学生成绩管理系统

/*
**
**       *************《C++学生成绩管理系统》********************* 
**       ***某知名大学 — 信息工程学院 — 软件工程 — 梁 "可爱"*** 
**       *******************2019-1-6******************************
**
*/


#include
#include
#include
#include "student.cpp"
#define Max 200
struct Student{
	student stu[Max];
	int length;
};
Student s;
using namespace std;

void Select_choose();//查询界面选择函数 
void Select_show();//查询界面 
void Main_show();//主界面 
void choose();//主界面选择函数 
void Add_show();//添加界面 
void Add_choose();//添加界面选择函数 
void add();//添加函数 
void Select_information();//查询学生信息 
void Select_score();//查询学生分数 
void Update_show();//修改界面 
void Updeta_choose();//修改界面选择函数 
void Update();//修改信息函数 
void Remove_show();//删除界面 
void Remove_choose();//删除界面选择函数 
void Remove();//删除函数 

void Remove(){
	system("cls");
	if(s.length == 0){//判断是否有学生 
		cout<<"该系统内无学生信息!"<= 5){
			system("cls");
			cout<<"您已经输入失败"<>sno;
		count++;
		for(int i = 0;i < s.length;i++){//遍历数组，找到该学号学生信息 
			if(s.stu[i].getSno() == sno){
				t = i;
				break;
			}
		}
		if(t == -1){//数组内没有该学号
			if(count < 5){
				cout<<"没有该学生的信息,请重新输入:";
			} 
			continue;
		}
		else{
			cout<<"是否要删除该学生("<>c;
				if(c == 'N' || c == 'n'){
					system("cls");
					Remove_show();
				}
				else if(c == 'Y' || c == 'y'){
					if(t == s.length - 1){
						s.length--;
					}
					else{
						s.stu[t].copy(s.stu[s.length -1]);
						s.length--;
					}
					cout<<"删除成功!"<>d;
						if(d == 'Y' || d == 'y'){
							Remove();
						}
						else if(d == 'N' || d == 'n'){
							system("cls");//清屏函数 
							Main_show();
						}
						else{
							cout<<"输入非法!请重新输入:";
						}
					}
				}
				else{
					cout<<"输入非法!请重新输入:";
				}
			} 
		}
	}
}
void Remove_choose(){
	int k;
	cin>>k;
	switch(k){
		case 1:
			system("cls");
			Remove();
			break;
		case 2:
			system("cls");
			Main_show();
			break;
		case 0:
			exit(0);
		default:
			cout<<"输入非法,请重新输入:";
			Remove_choose();
	}
}
void Remove_show(){
	cout<<"~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"<>sno;
		count++;
		if(count >= 5){
			system("cls");
			cout<<"您已经输入失败"<>name>>sex>>age>>math>>english>>computer;
			cout<<"是否要修改该学生("<>c;
				if(c == 'Y' || c == 'y'){
					s.stu[t].setName(name);
					s.stu[t].setSex(sex);
					s.stu[t].setAge(age);
					s.stu[t].setMath(math);
					s.stu[t].setEnglish(english);
					s.stu[t].setComputer(computer);
					break;
				}
				else if(c == 'N' || c == 'n'){
					break;
				}
				else{
					cout<<"输入非法,请重新输入:";
				}
			}
			cout<<"是否继续修改学生信息:(Y or N)";
			char d;
			while(true){
				cin>>d;
				if(d == 'Y' || d == 'y'){
					system("cls");
					Update();
				}
				else if(d == 'N' || d == 'n'){
					system("cls");
					Main_show();
				}
				else{
					cout<<"输入非法,请重新输入:";
				}
			} 
		}
	}
} 
void Update_choose(){
	int k;
	cin>>k;
	switch(k){
		case 1:
			system("cls");
			Update();
			break;
		case 2:
			system("cls");
			Main_show();
			break;
		case 0:
			exit(0);
		default:
			cout<<"输入非法,请重新输入:";
			Update_choose();
	}
}
void Update_show(){
	cout<<"~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"<>c;
	while(1){
		system("cls");
		Select_show();
	}
}
void Select_score(){
	double sum1 = 0,sum2 = 0,sum3 = 0;
	cout<<"学号\t姓名\t数学\t英语\t计算机\t总分\n";
	for(int i = 0;i < s.length;i++){
		cout<>c;
	while(1){
		system("cls");
		Select_show();
	}
}
void add(){
	bool flag = false;
	system("cls");
	cout<<"~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"<>sno;
		for(int i = 0; i < s.length;i++){
			if(s.stu[i].getSno() == sno)
			flag = true;	
		}
		if(flag){
			flag = false;
			cout<<"该学号已存在!"<>name;
	s.stu[s.length].setName(name);
	cout<<"请输入性别";
	string sex;
	cin>>sex;
	s.stu[s.length].setSex(sex);
	cout<<"请输入年龄:";
	int age;
	cin>>age;
	s.stu[s.length].setAge(age);
	cout<<"请输入数学成绩:";
	double math;
	cin>>math;
	s.stu[s.length].setMath(math);
	cout<<"请输入英语成绩:";
	double english;
	cin>>english;
	s.stu[s.length].setEnglish(english);
	cout<<"请输入计算机成绩:";
	double computer;
	cin>>computer;
	s.stu[s.length].setComputer(computer);
	system("cls");
	cout<<"学号("<>t;
		if(t == 'Y' || t == 'y'){
			s.length++;
			cout<<"您要继续添加吗?(Y or N)"<>temp;
				if(temp == 'Y' || temp == 'y'){
					system("cls");
					add();
				}
				else if(temp == 'N' || temp == 'n'){
					system("cls");
					Main_show();
				}
				else{
					cout<<"输入非法,请重新输入:";
				}
			}
			while(true);
		}
		else if(t == 'N' || t == 'n'){
			system("cls");
			Add_show();
		}
		else{
			cout<<"输入非法,请重新输入:";
		}
	}
	while(true);
}
void Add_choose(){
	int k;
	cin>>k;
	switch(k){
		case 1:
			add(); 
			break;
		case 2:
			system("cls");
			Main_show();
			break;
		case 0:
			exit(0);
		default:
			cout<<"输入非法!请重新输入:";
			Add_choose(); 
	}
} 
void Add_show(){
	cout<<"~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"<>k;
	switch(k){
		case 1:
			system("cls");
			Select_information();
			break;
		case 2:
			system("cls");
			Select_score();
			break;
		case 3:
			system("cls");
			Main_show();
			break;
		case 0:
			exit(0);
		default:
			cout<<"输入非法!请重新输入:";
			Select_choose(); 
	}
} 
void Select_show(){
	cout<<"~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"<>k;
	switch(k){
		case 1:
			//查询界面 
			system("cls");
			Select_show();
			break;
		case 2:
			//添加界面
			system("cls");
			Add_show(); 
			break;
		case 3:
			//修改界面 
			system("cls");
			Update_show();
			break;
		case 4:
			//删除界面 
			system("cls");
			Remove_show();
			break;
		case 0:
			exit(0);
		default:
			cout<<"输入非法!请重新输入:";
			choose();
	}
}
void Main_show(){
	cout<<"~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"<

/*
	学生类 
*/
#include
#include
using namespace std;
class student
{
	private:
		int sno;//学号
		string name;//姓名
		string sex;//性别
		int age;//年龄
		double math;//数学 
		double english;//英语 
		double computer;//计算机 
	public:
		void copy(student t){// 
			this->sno = t.getSno();
			this->name = t.getName();
			this->sex = t.getSex();
			this->age = t.getAge();
			this->math = t.getMath();
			this->english = t.getEnglish();
			this->computer = t.getComputer(); 
		}
		/* set() 和 get() */
		void setSno(int sno)
		{
			this->sno = sno;
		}
		void setName(string name)
		{
			this->name = name;
		}
		void setSex(string sex)
		{
			this->sex = sex;
		}
		void setAge(int age)
		{
			this->age = age;
		}
		void setMath(double math)
		{
			this->math = math;
		}
		void setEnglish(double english)
		{
        	this->english = english;
    	}
    	void setComputer(double computer)
    	{
    	    this->computer = computer;
    	}
    	int getSno()
   		{
    	    return this->sno;
    	}
    	string getName()
    	{
    	    return this->name;
    	}
    	string getSex()
    	{
    	    return this->sex;
    	}
    	int getAge()
    	{
    	    return this->age;
    	}
    	double getMath()
    	{
    	    return this->math;
    	}
    	double getEnglish()
    	{
    	    return this->english;
    	}
    	double getComputer()
    	{
    	    return this->computer;
    	}
    	void show1()
    	{
        	cout<sno<<"\t"<name<<"\t"<sex<<"\t"<age<sno<<"\t"<name<<"\t"<math<<"\t"<english<<"\t"<computer<