学生数据管理系统（开源代码）

版本1：

        头文件Student.h：

#ifndef stu_h
#define stu_h
#include
#include
#include
#include
#include
#include
#include
using namespace std;
const int MAX_SIZE = 60;
class Student
{
private:
	string name;
	string id;
	double math;
	double English;
	double computer;
public:
	Student() :name(""), id(""), math(100.0), English(100.0), computer(100.0) {}
	Student(string n) :name(n), id(""), math(100.0), English(100.0), computer(100.0) {}
	Student(string n, string i):name(n), id(i), math(100.0), English(100.0), computer(100.0) {}
	void SetName(string n)
	{
		name = n;
	}
	void SetId(string i)
	{
		id = i;
	}
	void SetMath(double m)
	{
		math = m;
	}
	void SetEnglish(double e)
	{
		English = e;
	}
	void SetComputer(double c)
	{
		computer = c;
	}
	string GetName()
	{
		return name;
	}
	string GetId()
	{
		return id;
	}
	double GetMath()
	{
		return math;
	}
	double GetEnglish()
	{
		return English;
	}
	double GetComputer()
	{
		return computer;
	}
	void SetAll(double m, double e, double c)
	{
		math = m;
		English = e;
		computer = c;
	}
	double GetSum()
	{
		return math + English + computer;
	}
	bool Match(string s, short flag)
	{
		if (flag == 1)
			return name == s;
		else
			return id == s;
	}
	void Print()
	{
		cout << name << '\t' << id << endl;
		cout << "数学：" << math << "\t英语：" << English << "\t计算机：" << computer << endl;
	}
};
bool cmp1(Student st1, Student st2)
{
	return st1.GetId() < st2.GetId();
}
bool cmp2(Student st1, Student st2)
{
	return st1.GetSum() > st2.GetSum();
}
class DataBase
{
private:
	Student stu[MAX_SIZE];
	short size;
public:
	DataBase() :size(0) {}
	bool Push(string n, string i, double m, double e, double c)
	{
		if (size == MAX_SIZE)
			return false;
		Student st(n, i);
		st.SetAll(m,e,c);
		stu[size++] = st;
		return true;
	}
	bool Push()
	{
		if (size == MAX_SIZE)
		{
			cout << "系统不能容纳更多学生。" << endl;
			system("pause");
			return false;
		}
		string n, i;
		cout << "请输入要添加的学生姓名：";
		cin >> n;
		int idx = 0;
		do
		{
			cout << "请输入该学生的学号：";
			cin >> i;
			for (idx = 0; idx < size; idx++)
			{
				if (stu[idx].Match(i, 2))
				{
					cout << "该学号已存在，不能重复输入！" << endl;
					break;
				}
			}
		} while (idx> m;
		cout << "请输入该学生的英语成绩：";
		cin >> e;
		cout << "请输入该学生的计算机成绩：";
		cin >> c;
		stu_tmp.SetAll(m, e, c);
		stu[size++] = stu_tmp;
		cout << "添加成功！" << endl;
		system("pause");
		return true;
	}
	short AimedSearch(short start_id, string str, short flag)
	{
		for (short i = start_id; i < size; i++)
		{
			if (stu[i].Match(str, flag))
			{
				stu[i].Print();
				return i;
			}
		}
		return -1;
	}
	short Search()
	{
		short choice = 0;
		do
		{
			cout << "请问你要按什么条件搜索？		1.姓名		2.学号		";
			cin >> choice;
		} while (choice != 1 && choice != 2);
		string match;
		cout << "请输入你要找的" << (choice == 1 ? "姓名" : "学号") << "：";
		cin >> match;
		short result = 0;
		char nod = 0;
		while (true)
		{
			result = AimedSearch(result, match, choice);
			if (result == -1)
			{
				cout << "未找到匹配信息。" << endl;
				system("pause");
				return result;
			}
			cout << "这是你要找的人吗？（y/n）";
			cin >> nod;
			nod = tolower(nod);
			if (nod == 'y')
				return result;
			else
				result++;
		}
	}
	bool Delete()
	{
		short result = 0;
		char choice = 0;
		result = Search();
		if (result == -1)
			return false;
		cout << "是否要删除这条信息？（y/n）";
		cin >> choice;
		choice = tolower(choice);
		short idx = 0;
		if (choice == 'y')
		{
			for (idx = result; idx < size - 1; idx++)
			{
				stu[idx] = stu[idx + 1];
			}
			size--;
			cout << "删除成功！" << endl;
			system("pause");
			return true;
		}
		cout << "信息未删除！" << endl;
		system("pause");
		return false;
	}
	bool Alter()
	{
		short result = 0;
		string rename;
		double rescore = 0.0;
		result = Search();
		if (result == -1)
			return false;
		char choice = 0;
		cout << "是否要修改这条信息？（y/n）";
		cin >> choice;
		choice = tolower(choice);
		if (choice == 'y')
		{
			cout << "修改什么？	1.名字	2.数学成绩	3.英语成绩	4.计算机成绩" << endl;
			char subchoice = 0;
			cin >> subchoice;
			switch (subchoice)
			{
			case '1':
			{
				cout << "输入一个新名字：";
				cin >> rename;
				stu[result].SetName(rename);
				cout << "修改成功！" << endl;
				system("pause");
				break;
			}
			case '2':
			{
				cout << "输入数学成绩：";
				cin >> rescore;
				stu[result].SetMath(rescore);
				cout << "修改成功！" << endl;
				system("pause");
				break;
			}
			case '3':
			{
				cout << "输入英语成绩：";
				cin >> rescore;
				stu[result].SetEnglish(rescore);
				cout << "修改成功！" << endl;
				system("pause");
				break;
			}
			case '4':
			{
				cout << "输入计算机成绩：";
				cin >> rescore;
				stu[result].SetComputer(rescore);
				cout << "修改成功！" << endl;
				system("pause");
				break;
			}
			default:
			{
				cout << "修改失败！" << endl;
				return false;
			}
			}
			return true;
		}
		cout << "信息未修改。" << endl;
		system("pause");
		return false;
	}
	void Display()
	{
		cout << endl << setw(12) << setiosflags(ios::left) << "姓名" << setw(12) << "学号" << setw(8) << "数学" << setw(8) << "英语" << setw(8) << "计算机" << endl << endl;
		for (int i = 0; i < size; i++)
		{
			cout << setw(12) << stu[i].GetName()<> choice;
		} while (choice != '1' && choice != '2');
		if (choice == '1')
		{
			sort(&stu[0], &stu[0] + size, cmp1);
		}
		else
		{
			sort(&stu[0], &stu[0] + size, cmp2);
		}
		cout << "重新排序完成。" << endl;
		system("pause");
	}
	char ShowMenu()
	{
		char choice = 0;
		do
		{
			system("cls");
			cout << "----------欢迎使用成绩管理系统----------" << endl << endl;
			cout << "		1.添加学生" << endl;
			cout << "		2.查找学生" << endl;
			cout << "		3.删除学生" << endl;
			cout << "		4.重新排序" << endl;
			cout << "		5.显示全部" << endl;
			cout << "		6.修改信息" << endl;
			cout << "		7.退出" << endl;
			cin >> choice;
		} while (choice < '1' || choice>'7');
		return choice;
	}
	bool Call(char choice)
	{
		switch (choice)
		{
		case '1':
		{
			Push();
			return true;
		}
		case '2':
		{
			Search();
			return true;
		}
		case '3':
		{
			Delete();
			return true;
		}
		case '4':
		{
			Sort();
			return true;
		}
		case '5':
		{
			Display();
			return true;
		}
		case '6':
		{
			Alter();
			return true;
		}
		case '7':
		{
			return false;
		}
		default:
			break;
		}
	}
};
#endif

        源文件main.cpp:

#include"Student.h"
int main()
{
	DataBase student1;
	bool quit = false;
	student1.Push("徐","00001",100.0,100.0,100.0);
	student1.Push("吴", "00002", 98.0, 85.0, 99.0);
	while (!quit)
	{
		if (!student1.Call(student1.ShowMenu()))
			quit = true;
	}
	return 0;
}

版本2：

#include
#include
#include
#include
#include
#include
#include
using namespace std;
const int MAX_SIZE = 60;
class Student
{
private:
	string name;
	string id;
	double math;
	double English;
	double computer;
public:
	Student() :name(""), id(""), math(100.0), English(100.0), computer(100.0) {}
	Student(string n) :name(n), id(""), math(100.0), English(100.0), computer(100.0) {}
	Student(string n, string i) :name(n), id(i), math(100.0), English(100.0), computer(100.0) {}
	void SetName(string n)
	{
		name = n;
	}
	void SetId(string i)
	{
		id = i;
	}
	void SetMath(double m)
	{
		math = m;
	}
	void SetEnglish(double e)
	{
		English = e;
	}
	void SetComputer(double c)
	{
		computer = c;
	}
	string GetName()
	{
		return name;
	}
	string GetId()
	{
		return id;
	}
	double GetMath()
	{
		return math;
	}
	double GetEnglish()
	{
		return English;
	}
	double GetComputer()
	{
		return computer;
	}
	void SetAll(double m, double e, double c)
	{
		math = m;
		English = e;
		computer = c;
	}
	double GetSum()
	{
		return math + English + computer;
	}
	bool Match(string s, short flag)
	{
		if (flag == 1)
			return name == s;
		else
			return id == s;
	}
	void Print()
	{
		cout << name << '\t' << id << endl;
		cout << "数学：" << math << "\t英语：" << English << "\t计算机：" << computer << endl;
	}
};
bool cmp1(Student st1, Student st2)
{
	return st1.GetId() < st2.GetId();
}
bool cmp2(Student st1, Student st2)
{
	return st1.GetSum() > st2.GetSum();
}
class DataBase
{
private:
	Student stu[MAX_SIZE];
	short size;
public:
	DataBase() :size(0) {}
	bool Push(string n, string i, double m, double e, double c)
	{
		if (size == MAX_SIZE)
			return false;
		Student st(n, i);
		st.SetAll(m, e, c);
		stu[size++] = st;
		return true;
	}
	bool Push()
	{
		if (size == MAX_SIZE)
		{
			cout << "系统不能容纳更多学生。" << endl;
			system("pause");
			return false;
		}
		string n, i;
		cout << "请输入要添加的学生姓名：";
		cin >> n;
		int idx = 0;
		do
		{
			cout << "请输入该学生的学号：";
			cin >> i;
			for (idx = 0; idx < size; idx++)
			{
				if (stu[idx].Match(i, 2))
				{
					cout << "该学号已存在，不能重复输入！" << endl;
					break;
				}
			}
		} while (idx < size);
		Student stu_tmp(n, i);
		double m = 0.0, e = 0.0, c = 0.0;
		cout << "请输入该学生的数学成绩：";
		cin >> m;
		cout << "请输入该学生的英语成绩：";
		cin >> e;
		cout << "请输入该学生的计算机成绩：";
		cin >> c;
		stu_tmp.SetAll(m, e, c);
		stu[size++] = stu_tmp;
		cout << "添加成功！" << endl;
		system("pause");
		return true;
	}
	short AimedSearch(short start_id, string str, short flag)
	{
		for (short i = start_id; i < size; i++)
		{
			if (stu[i].Match(str, flag))
			{
				stu[i].Print();
				return i;
			}
		}
		return -1;
	}
	short Search()
	{
		short choice = 0;
		do
		{
			cout << "请问你要按什么条件搜索？		1.姓名		2.学号		";
			cin >> choice;
		} while (choice != 1 && choice != 2);
		string match;
		cout << "请输入你要找的" << (choice == 1 ? "姓名" : "学号") << "：";
		cin >> match;
		short result = 0;
		char nod = 0;
		while (true)
		{
			result = AimedSearch(result, match, choice);
			if (result == -1)
			{
				cout << "未找到匹配信息。" << endl;
				system("pause");
				return result;
			}
			cout << "这是你要找的人吗？（y/n）";
			cin >> nod;
			nod = tolower(nod);
			if (nod == 'y')
				return result;
			else
				result++;
		}
	}
	bool Delete()
	{
		short result = 0;
		char choice = 0;
		result = Search();
		if (result == -1)
			return false;
		cout << "是否要删除这条信息？（y/n）";
		cin >> choice;
		choice = tolower(choice);
		short idx = 0;
		if (choice == 'y')
		{
			for (idx = result; idx < size - 1; idx++)
			{
				stu[idx] = stu[idx + 1];
			}
			size--;
			cout << "删除成功！" << endl;
			system("pause");
			return true;
		}
		cout << "信息未删除！" << endl;
		system("pause");
		return false;
	}
	bool Alter()
	{
		short result = 0;
		string rename;
		double rescore = 0.0;
		result = Search();
		if (result == -1)
			return false;
		char choice = 0;
		cout << "是否要修改这条信息？（y/n）";
		cin >> choice;
		choice = tolower(choice);
		if (choice == 'y')
		{
			cout << "修改什么？	1.名字	2.数学成绩	3.英语成绩	4.计算机成绩" << endl;
			char subchoice = 0;
			cin >> subchoice;
			switch (subchoice)
			{
			case '1':
			{
				cout << "输入一个新名字：";
				cin >> rename;
				stu[result].SetName(rename);
				cout << "修改成功！" << endl;
				system("pause");
				break;
			}
			case '2':
			{
				cout << "输入数学成绩：";
				cin >> rescore;
				stu[result].SetMath(rescore);
				cout << "修改成功！" << endl;
				system("pause");
				break;
			}
			case '3':
			{
				cout << "输入英语成绩：";
				cin >> rescore;
				stu[result].SetEnglish(rescore);
				cout << "修改成功！" << endl;
				system("pause");
				break;
			}
			case '4':
			{
				cout << "输入计算机成绩：";
				cin >> rescore;
				stu[result].SetComputer(rescore);
				cout << "修改成功！" << endl;
				system("pause");
				break;
			}
			default:
			{
				cout << "修改失败！" << endl;
				return false;
			}
			}
			return true;
		}
		cout << "信息未修改。" << endl;
		system("pause");
		return false;
	}
	void Display()
	{
		cout << endl << setw(12) << setiosflags(ios::left) << "姓名" << setw(12) << "学号" << setw(8) << "数学" << setw(8) << "英语" << setw(8) << "计算机" << endl << endl;
		for (int i = 0; i < size; i++)
		{
			cout << setw(12) << stu[i].GetName() << setw(12) << stu[i].GetId();
			printf("%-8.1lf%-8.1lf%-8.1lf\n", stu[i].GetMath(), stu[i].GetEnglish(), stu[i].GetComputer());
		}
		cout << resetiosflags(ios::right);
		system("pause");
	}
	void Sort()
	{
		char choice = 0;
		do
		{
			cout << "请输入排序方式	1.学号升序	2.总成绩降序" << endl;
			cin >> choice;
		} while (choice != '1' && choice != '2');
		if (choice == '1')
		{
			sort(&stu[0], &stu[0] + size, cmp1);
		}
		else
		{
			sort(&stu[0], &stu[0] + size, cmp2);
		}
		cout << "重新排序完成。" << endl;
		system("pause");
	}
	char ShowMenu()
	{
		char choice = 0;
		do
		{
			system("cls");
			cout << "----------欢迎使用成绩管理系统----------" << endl << endl;
			cout << "		1.添加学生" << endl;
			cout << "		2.查找学生" << endl;
			cout << "		3.删除学生" << endl;
			cout << "		4.重新排序" << endl;
			cout << "		5.显示全部" << endl;
			cout << "		6.修改信息" << endl;
			cout << "		7.退出" << endl;
			cin >> choice;
		} while (choice < '1' || choice>'7');
		return choice;
	}
	bool Call(char choice)
	{
		switch (choice)
		{
		case '1':
		{
			Push();
			return true;
		}
		case '2':
		{
			Search();
			return true;
		}
		case '3':
		{
			Delete();
			return true;
		}
		case '4':
		{
			Sort();
			return true;
		}
		case '5':
		{
			Display();
			return true;
		}
		case '6':
		{
			Alter();
			return true;
		}
		case '7':
		{
			return false;
		}
		default:
			break;
		}
	}
};
int main()
{
	DataBase student1;
	bool quit = false;
	student1.Push("徐","00001",100.0,100.0,100.0);
	student1.Push("吴", "00002", 98.0, 85.0, 99.0);
	while (!quit)
	{
		if (!student1.Call(student1.ShowMenu()))
			quit = true;
	}
	return 0;
}