C++项目-数据信息管理系统

数据信息管理系统

创建项目

项目功能需求

实现一个班级管理系统，需要具有以下功能：

• 添加学生信息
• 删除学生信息
• 修改学生信息
• 显示学生信息
• 清空学生信息

使用到的技术：

• 封装
• 继承
• 多态
• 多态数组容器

项目目录结构

Manage.cpp核心代码

#include "Manage.h"
#include "VAStudent.h"
#include "REStudent.h"

Manage::Manage()
{
}

Manage::~Manage()
{
}

void Manage::Menu()
{	
	while (true)
	{
		int userSelect = this->indexPage();
		switch (userSelect)
		{
		case 1:
			userSelect = this->indexPage(1);
			if (userSelect == -1) break;
			this->addStdFunc();
			break;
		case 2:
			userSelect = this->indexPage(2);
			if (userSelect == -1) break;
			this->delStdFunc();
			break;
		case 3:
			userSelect = this->indexPage(3);
			if (userSelect == -1) break;
			this->modifyStdFunc();
			break;
		case 4:
			userSelect = this->indexPage(4);
			if (userSelect == -1) break;
			this->showStdFunc();
			break;
		case 5:
			userSelect = this->indexPage(5);
			if (userSelect == -1) break;
			this->searchStdFunc();
			break;
		case 6:
			userSelect = this->indexPage(6);
			if (userSelect == -1) break;
			this->clearStdFunc();
			break;
		case 7:
			return;
			break;
		default:
			break;
		}
	}
}

int Manage::indexPage(int index)
{
	system("cls");
	std::cout << "\t\t\t#######欢迎使用逆向工程学院管理系统#######" << std::endl;
	for (size_t i = 0; i < 7; i++)
	{
		if (index == 0) {
			std::cout << "\t\t\t|----------------------------------------|" << std::endl;
			std::cout << "\t\t\t|\t\t" << (i + 1) << ". " << menuList[i] << "\t\t |" << std::endl;
		}
		else 
		{
			if (index == (i+1))
			{
				std::cout << "\t\t\t|----------------------------------------|" << std::endl;
				std::cout << "\t\t\t|\t\t" << "1. " << menuList[i] << "\t\t |" << std::endl;
				std::cout << "\t\t\t|----------------------------------------|" << std::endl;
				std::string userSelect;
				std::cout<<"\t\t\t|"<< "输入任意键继续，输入0返回：";
				std::cin >> userSelect;
				if (userSelect == "0") return -1;
				return 0;
			}
		
		}
	}
	std::cout << "\t\t\t|----------------------------------------|" << std::endl;

	int userSelect;
	std::cout << "\t\t\t|请输入选项（1~7）: ";
	std::cin >> userSelect;
	return userSelect;
}

void Manage::addStdFunc()
{
	int userSelect;
	int sid;
	std::string name;
	int className;
	FLAG:
	std::cout<< "\t\t\t|请选择专业（1.病毒分析、2.逆向破解）：";
	std::cin >> userSelect;
	//if (userSelect == 0) return;
	if (userSelect > 3 || userSelect < 0) goto FLAG;
	std::cout<< "\t\t\t|请输入学号：";
	std::cin >> sid;
	bool is_null = this->isSidInArr(sid);
	if (is_null) {
		std::cout << "\t\t\t|您输入的学号已存在！" << std::endl;
		goto FLAG;
	}
	std::cout << "\t\t\t|请输入姓名：";
	std::cin >> name;
	std::cout << "\t\t\t|请输入班级：";
	std::cin >> className;
	if (userSelect == 1)
	{
		this->ArrStds.push_back(new VAStudent(sid,name,className));
	}else
	{
		this->ArrStds.push_back(new REStudent(sid, name, className));
	}
	std::string yn;
	std::cout << "\t\t\t|已添加学生信息，是否继续添加？(y/n)：";
	std::cin >> yn;
	if (yn == "y") goto FLAG;
}

void Manage::delStdFunc()
{
	int del_id;
	//std::cout << "\t\t\t|进入删除学生信息模块，输入-1返回>> " << std::endl;
	DEL_FLAG:
	std::cout << "\t\t\t|请输入要删除的学生ID：";
	std::cin >> del_id;
	if (del_id == 0) return;
	if (!(this->isSidInArr(del_id)))
	{
		std::cout << "\t\t\t|您输入的学号不存在，请重新输入 " << std::endl;
		goto DEL_FLAG;
	};
	// 开始删除学生信息
	for (size_t i = 0; i < this->ArrStds.size(); i++)
	{
		if (del_id == ArrStds[i]->sId)
		{
			std::string u_scl;
			std::cout << "\t\t\t|您要删除的学生信息是" << std::endl;
			ArrStds[i]->showStudentInfo();
			std::cout << "\t\t\t|是否确认删除（y/n）：";
			std::cin >> u_scl;
			if (u_scl == "y")
			{
				this->ArrStds.erase(this->ArrStds.begin() + i);
				std::cout << "\t\t\t|已删除学生，学号为："<< del_id << std::endl;
			}
			else {
				goto DEL_FLAG;
			}
		}
	}
	std::string u_scl;
	std::cout << "\t\t\t|是否继续删除（y/n）：";
	std::cin >> u_scl;
	if (u_scl == "y") goto DEL_FLAG;
	return;
	//system("pause");
}

void Manage::modifyStdFunc()
{
	FLAG:
	int u_id;
	int is_in = false;
	std::cout << "\t\t\t|请输入要修改的学生ID：";
	std::cin >> u_id;
	if (u_id == 0) return;
	for (size_t i = 0; i < this->ArrStds.size(); i++)
	{
		if (u_id == this->ArrStds[i]->sId)
		{
			is_in = true;
			std::cout << "\t\t\t|您要修改的学生信息如下所示：" << std::endl;
			this->ArrStds[i]->showStudentInfo();
			int new_id;
			std::cout << "\t\t\t|请输入要修改的学号：";
			std::cin >> new_id;
			if (this->isSidInArr(new_id))
			{
				std::cout << "\t\t\t|您要修改的学号已经存在，不可修改" << std::endl;
				goto FLAG;
			}
			ArrStds[i]->sId = new_id;
			std::cout << "\t\t\t|学号已经修改成："<< ArrStds[i]->sId << std::endl;
		}
	}
	if (!is_in) 
	{
		std::cout<<"\t\t\t|您输入的学号不存在，请查询输入" << std::endl;
		goto FLAG;
	}
	system("pause");
}

void Manage::showStdFunc()
{
	std::cout<<"\t\t\t|全部学生信息如下所示>> " << std::endl;
	for (size_t i = 0; i < this->ArrStds.size(); i++)
	{
		// 这里使用到多态技术
		this->ArrStds[i]->showStudentInfo();
	}
	system("pause");
}

void Manage::searchStdFunc()
{
	FLAG:
	int is_emty = true;
	int in_id;
	std::cout << "\t\t\t|请输入学号搜索：";
	std::cin >> in_id;
	std::cout << "\t\t\t|搜索到的学生信息如下所示：" << std::endl;
	for (size_t i = 0; i < this->ArrStds.size(); i++)
	{
		if (in_id == this->ArrStds[i]->sId)
		{
			is_emty = false;
			this->ArrStds[i]->showStudentInfo();
			break;
		}
	}
	std::string dd;
	if (is_emty) 
	{
		std::cout << "\t\t\t|搜索到的信息为空" << std::endl;
	}
	std::cout << "\t\t\t|是否继承搜索（y/n）：";
	std::cin >> dd;
	if (dd == "y") goto FLAG;
	return;
}

void Manage::clearStdFunc()
{
	std::string is_claer_std;
	std::cout << "\t\t\t|是否清空全部学生信息?（y/n）";
	std::cin >> is_claer_std;
	if (is_claer_std == "y")
	{
		this->ArrStds.clear();
		std::cout << "\t\t\t|学生信息已全部清空." << std::endl;
		system("pause");
	}
}

bool Manage::isSidInArr(int sid)
{
	if (this->ArrStds.size() <= 0) return false;
	for (size_t i = 0; i < this->ArrStds.size(); i++)
	{
		if (sid == this->ArrStds[i]->sId) return true;
	}
	return false;
}

项目完成截图：