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2.数据库管理系统的数据数据代码是跟windows代码一样运行在内核态的吗?
3.用c++编写学生管理系统
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数据库管理系统的代码是跟windows代码一样运行在内核态的吗?
说实话,你提问题提的管理管理很模糊,不知道是系统系统什么意思?你所谓的代码是源代码还是指返回码
如果是源代码的话,给你以下的源码源码千峰和源码答案:
数据库的源代码是基于系统之上运行的,也就是大全大全说在运行上,实际上是图片图片纸壳cms 源码会调用系统的功能的,当然不一定是数据数据windows的
windows的代码的话,是管理管理基于本身的基本架构来做的,肯定是系统系统先实现了基本核心,然后才实现外围的源码源码一些功能的。
如果是大全大全返回码的话,那就情况又不一样了。图片图片
数据库的数据数据123个实战源码返回码一般分三种
1.系统设计人员设定的
2.数据库上的返回码
3.数据库调用系统功能的返回码
而系统的返回码则主要是系统开发层面上的
用c++编写学生管理系统
今天卧病在家,抽时间写的管理管理这么个简单的管理系统,完全是系统系统命令行界面的,对于一些异常的源码ym.com内容考虑的还不是很周到。不知道你具体用于做什么。不过希望对你有帮助,你可以基于源码进行修改。金蝶erp源码下载如下内容在VC上编译并测试通过基本场景。如果你需要图形界面,你可以尝试用MFC或者C#等包装,时间有限,只能先做到这些了。good luck!
// mytest.cpp : 定义控制台应用程序的入口点。
//
#include "stdafx.h"
#include <iostream>
#include <map>
#include <string>
#include <algorithm>
class Student
{
public:
Student(std::string name,
unsigned long id,
std::string sex,
std::string political,
std::string address)
:
m_name(name),
m_id(id),
m_sex(sex),
m_political(political),
m_address(address)
{
}
public:
unsigned long m_id;
std::string m_name;
std::string m_sex;
std::string m_political;
std::string m_address;
};
typedef std::map<unsigned long, Student> StudentCont;
class StudentMgr
{
public:
StudentMgr()
:
m_num(0)
{
}
void add()
{
std::cin.clear();
std::cin.sync();
std::string name("");
std::cout << "please input student's name: ";
std::getline(std::cin, name);
std::string sex("");
std::cout << "please input student's sex: ";
std::getline(std::cin,sex);
std::string political("");
std::cout << "please input student's political apperance: ";
std::getline(std::cin,political);
std::string address("");
std::cout << "please input student's address: ";
std::getline(std::cin,address);
m_num++;
Student student(name, m_num, sex, political, address);
m_students.insert(std::make_pair(m_num, student));
std::cout << "Student " << m_num << " " << name << " " << sex << " " << political << " " << address << " add successfully!" << std::endl;
}
void del()
{
unsigned long id;
std::cout << "Please input the student's id:";
std::cin >> id;
StudentCont::iterator iter = m_students.find(id);
if(iter != m_students.end())
{
m_students.erase(id);
std::cout << "Id number: " << id << " was deleted successfully!" << std::endl;
}
else
{
std::cout << "Id number: " << id << " doesn't exist in the system!" << std::endl;
}
}
void mod()
{
unsigned long id;
std::cout << "Please input the student's id:";
std::cin >> id;
StudentCont::iterator iter = m_students.find(id);
if(iter != m_students.end())
{
std::cout << "Id number: " << id << " is found, please input the information you want to change!" << std::endl;
std::cout << "please input your choice number:" << std::endl;
std::cout << "--------------------------------" << std::endl;
std::cout << "-[1] name. -" << std::endl;
std::cout << "-[2] sex. -" << std::endl;
std::cout << "-[3] political apperance. -" << std::endl;
std::cout << "-[4] address. -" << std::endl;
std::cout << "-[5] Quit! -" << std::endl;
std::cout << "--------------------------------" << std::endl;
unsigned long choiceNum;
std::cin >> choiceNum;
switch(choiceNum)
{
case 1:
{
std::string name;
std::cin.clear();
std::cin.sync();
std::cout << "please input new student's name: "<< std::endl;
std::getline(std::cin,name);
(*iter).second.m_name = name;
break;
}
case 2:
{
std::string sex;
std::cin.clear();
std::cin.sync();
std::cout << "please input correct student's sex: "<< std::endl;
std::getline(std::cin,sex);
(*iter).second.m_sex = sex;
break;
}
case 3:
{
std::string political;
std::cin.clear();
std::cin.sync();
std::cout << "please input student's new political apperance: "<< std::endl;
std::getline(std::cin,political);
(*iter).second.m_political = political;
break;
}
case 4:
{
std::string address;
std::cin.clear();
std::cin.sync();
std::cout << "please input student's new address: "<< std::endl;
std::getline(std::cin,address);
(*iter).second.m_address = address;
break;
}
case 5:
break;
default:
{
std::cerr << "Input choice number:" << choiceNum << " is wrong!" << std::endl;
break;
}
}
}
else
{
std::cout << "Id number: " << id << " doesn't exist in the system, return to the menu!" << std::endl;
}
std::cout << "modify sucessfull!" << std::endl;
}
void query()
{
unsigned long id;
std::cout << "Please input the student's id:";
std::cin >> id;
StudentCont::iterator iter = m_students.find(id);
if(iter != m_students.end())
{
std::cout << "The student's information is: "
<< (*iter).second.m_id << " "
<< (*iter).second.m_name << " "
<< (*iter).second.m_address << " "
<< (*iter).second.m_political << " "
<< (*iter).second.m_sex << std::endl;
}
else
{
std::cout << "Id number: " << id << " doesn't exist in the system, return to the menu!" << std::endl;
}
}
private:
unsigned long m_num;
StudentCont m_students;
};
void printMenu()
{
std::cout << "please input your choice number:" << std::endl;
std::cout << "--------------------------------" << std::endl;
std::cout << "-[1] Add a student. -" << std::endl;
std::cout << "-[2] Delete a student. -" << std::endl;
std::cout << "-[3] Modify a student. -" << std::endl;
std::cout << "-[4] Query students. -" << std::endl;
std::cout << "-[5] Quit! -" << std::endl;
std::cout << "--------------------------------" << std::endl;
}
void startstudentManagement()
{
std::cout << "Thank you for using this simple student management system, Welcome!" << std::endl;
printMenu();
std::auto_ptr<StudentMgr> studentMgr(new StudentMgr);
bool stop = false;
do
{
unsigned long choiceNum = 0;
std::cout << "Your choice number is: ";
std::cin.clear();
std::cin.sync();
std::cin >> choiceNum;
switch(choiceNum)
{
case 1:
studentMgr->add();
break;
case 2:
studentMgr->del();
break;
case 3:
studentMgr->mod();
break;
case 4:
studentMgr->query();
break;
case 5:
stop = true;
break;
default:
std::cerr << "The input number is none of the choice, please try again." << std::endl;
stop = true;
break;
}
}
while(!stop);
}
void stopstudentManagement()
{
std::cout << "Thank you for using this simple student management system, Bye!" << std::endl;
}
int main(void)
{
startstudentManagement();
stopstudentManagement();
return 0;
}
以上回答你满意么?