[开发工具]C++背景实现 学生管理系统（添加、显示、删除、修改）

#include<iostream>
using namespace std;
#include<string>
#define MAX 1000

//学生信息的结构体
struct Student
{
	//学号
	string S_sno;
	//姓名
	string S_name;
	//性别
	int S_sex;
	//年龄
	int S_age;
	//家庭住址
	string S_address;
	//联系方式
	string S_phone;
};
//学生管理库的结构体
struct StudentNum
{
	Student arr[MAX];
	int size;
};


//00 主界面
void MainMap()
{
	cout << "**************************" << endl;
	cout << "*****01、增加学生信息*****" << endl;
	cout << "*****02、删除学生信息*****" << endl;
	cout << "*****03、修改学生信息*****" << endl;
	cout << "*****04、显示学生信息*****" << endl;
	cout << "*****05、查找学生信息*****" << endl;
	cout << "*****00、退出学生系统*****" << endl;
	cout << "**************************" << endl;
}

//01 增加学生信息
void AddStudent(StudentNum *stu)
{
	if (stu->size == MAX)
	{
		cout << "学生信息库已满，无法添加！" << endl;
	}
	else
	{
		cout << "请输入学生学号：" << endl;
		cin >> stu->arr[stu->size].S_sno;

		cout << "请输入学生姓名：" << endl;
		cin >> stu->arr[stu->size].S_name;
		
		cout << "请输入学生性别：" << endl;
		cout << "1---男" << endl;
		cout << "2---女" << endl;
		cin >> stu->arr[stu->size].S_sex;
		while (1)
		{
			if (stu->arr[stu->size].S_sex == 1 || stu->arr[stu->size].S_sex == 2)
				break;
			else
			{
				cout << "输入错误，请重新输入！" << endl;
				cin >> stu->arr[stu->size].S_sex;
			}
		}
		cout << "请输入学生年龄：" << endl;
		cin >> stu->arr[stu->size].S_age;
		
		cout << "请输入学生家庭住址：" << endl;
		cin >> stu->arr[stu->size].S_address;
		
		cout << "请输入学生联系方式：" << endl;
		cin >> stu->arr[stu->size].S_phone;
	}
	stu->size++;
	cout << "输入成功！" << endl;
	system("pause");
	system("cls");
}
//02 删除学生信息 按学号删除学生
void DeleteStudent(StudentNum*stu)
{
	string sno;
	cout << "请输入删除学生的学号：" << endl;
	cin >> sno;
	int temp = 0;
	if (stu->size == 0)//判断stu里面有无数据
		cout << "删除失败！" << endl;
	for (int i = 0; i < stu->size; i++)
	{
		if (stu->arr[i].S_sno == sno)
		{
			temp = i;
		}
		else
			cout << "查无此人！" << endl;
	}
	if (temp != stu->size - 1)//判断temp是不是最后一个值
	{
		for (int i = temp; temp < stu->size; i++)
		{
			stu->arr[i] = stu->arr[i + 1];
		}
	}
	stu->size--;
	system("pause");
	system("cls");
}

//03 修改学生信息 按学号修改学生
void AlterStudent(StudentNum* stu)
{
	string sno;
	cin >> sno;
	int temp = 0;
	cout << "请输入要修改的学生学号：" << endl;
	for (int i = 0; i < stu->size; i++)
	{
		if (stu->arr[i].S_sno == sno)
		{
			temp = i;
		}
		else
			cout << "查无此人！" << endl;
	}
	cout << "请输入要修改的信息：" << endl;
	cout << "1、学号" << endl;
	cout << "2、姓名" << endl;
	cout << "3、性别" << endl;
	cout << "4、年龄" << endl;
	cout << "5、家庭住址" << endl;
	cout<<"6、联系方式" << endl;
	int n;//输入的选项
	cin >> n;
	switch (n)
	{
	case 1:
		cin >> stu->arr[temp].S_sno;
		break;
	case 2:
		cin >> stu->arr[temp].S_name;
		break;
	case 3:
		cin >> stu->arr[temp].S_age;
		break;
	case 4:
		cin >> stu->arr[temp].S_age;
		break;
	case 5:
		cin >> stu->arr[temp].S_address;
		break;
	case 6:
		cin >> stu->arr[temp].S_phone;
		break;
	}

}
//04 显示学生信息 
void ShowStudent(StudentNum* stu)
{
	if (stu->size == 0)
		cout << "无学生信息!" << endl;
	else
	{
		for (int i = 0; i < stu->size; i++)
		{
			cout << "学号：" << stu->arr[i].S_sno << "\t"
				<< "姓名：" << stu->arr[i].S_name << "\t";
			if (stu->arr[i].S_sex == 1)
				cout << "性别：男" << "\t";
			else
				cout << "性别：女" << "\t";
			cout << "性别：" << stu->arr[i].S_sex << "\t"
				<< "年龄：" << stu->arr[i].S_age << "\t"
				<< "家庭住址：" << stu->arr[i].S_address << "\t"
				<< "联系方式：" << stu->arr[i].S_phone << endl;
		}
	}
	system("pause");
	system("cls");
}
//05 查找学生信息 按学号
void FindStudent(StudentNum* stu)
{
	cout << "请输入学生学号：" << endl;
	string sno;
	for (int i = 0; i < stu->size; i++)
	{
		if (stu->arr[i].S_sno == sno)
		{
			cout << "学号：" << stu->arr[i].S_sno << "\t"
				<< "姓名：" << stu->arr[i].S_name << "\t";
			if (stu->arr[i].S_sex == 1)
				cout << "性别：男" << "\t";
			else
				cout << "性别：女" << "\t";
			cout << "性别：" << stu->arr[i].S_sex << "\t"
				<< "年龄：" << stu->arr[i].S_age << "\t"
				<< "家庭住址：" << stu->arr[i].S_address << "\t"
				<< "联系方式：" << stu->arr[i].S_phone << endl;
		}
		else
			cout << "查无此人！" << endl;
	}
	system("pause");
	system("cls");
}

int main()
{
	StudentNum a;

	a.size = 0;//初始化个数

	while (1)
	{
		MainMap();
		int n;//选项
		cin >> n;
		switch (n)
		{
		case 01:
			AddStudent(&a);
			break;
		case 02:
			DeleteStudent(&a);
			break;
		case 03:
			AlterStudent(&a);
			break;
		case 04:
			ShowStudent(&a);
			break;
		case 05:
			FindStudent(&a);
			break;
		case 00:
			cout << "欢迎再次使用!" << endl;
			return 0;
			break;
		}
	}
	system("pause");
	return 0;
}