无聊写了半个学生管理系统，控制台的需要交作业的应该够了
就只有一点点功能，没有用任何简洁的算法。不过需要交作业的话应该够了，不够的话自己加功能。需要优化的自己优化。代码在dev-C++和vs2008编译通过。
注释也少啊。
代码如下：
subject.h
程序代码：//科目类
#include <iostream>
#include <string>
class Subject
{
public:
Subject();
void Display(); // 显示信息，科目名称和成绩
void setsjName(std::string sjName); // 设置科目名称
std::string getsjName(); // 获取科目名称
void setRes(float theRes); // 设置科目成绩
float getRes(); // 获取科目成绩
private:
std::string sjName; //科目名称字符串
float theRes; //科目成绩变量
};
subject.cpp程序代码：#include "subject.h"
using namespace std;
Subject::Subject()
{
sjName="";
}
void Subject::setsjName(string sjName)
{
this->sjName=sjName;
}
string Subject::getsjName()
{
return this->sjName;
}
void Subject::setRes(float theRes)
{
this->theRes=theRes;
}
float Subject::getRes()
{
return this->theRes;
}
void Subject::Display()
{
cout<<getsjName()<<":"<<getRes()<<endl;
}
student.h程序代码：//学生类
#include <iostream>
#include <string>
#include "subject.h"
const int maxJect=5; //最多科目数
class Student
{
public:
Student();
void Display(); //显示学生信息
Subject& addRes(float res); //添加学生成绩
Subject& addJect(std::string ject); //添加科目
void setstuClass(std::string stuClass); //设置学生班级
std::string getstuClass(); //获取学生班级
void setstuName(std::string stuName); //设置学生名称
std::string getstuName(); //获取学生名称
void setSex(std::string sex); //设置学生性别
std::string getSex(); //获取学生性别
void setstuNumber(int stuNumber);//设置学生学号
int getstuNumber();//获取学生学生
protected:
Subject mSubject[maxJect]; //定义科目类
int nextJect; //下一个科目名称
int nextRes;//下一个科目成绩
private:
std::string stuClass; //学生班级
std::string stuName;//学生姓名
std::string sex; //学生性别
int stuNumber; //学生学号
};
student.cpp
程序代码：#include "student.h"
using namespace std;
Student::Student()
{
stuNumber=nextRes=nextJect=0;
}
Subject& Student::addRes(float res)
{
if (nextRes >= maxJect) {
cerr << "越界错误" << endl;
throw exception();
}
Subject& theSubject=mSubject[nextRes++];
theSubject.setRes(res);
return theSubject;
}
Subject& Student::addJect(string ject)
{
if (nextJect >= maxJect) {
cerr << "越界错误" << endl;
throw exception();
}
Subject& theSubject=mSubject[nextJect++];
theSubject.setsjName(ject);
return theSubject;
}
void Student::setstuClass(string stuClass)
{
this->stuClass=stuClass;
}
string Student::getstuClass()
{
return stuClass;
}
void Student::setstuName(string stuName)
{
this->stuName=stuName;
}
string Student::getstuName()
{
return stuName;
}
void Student::setSex(string sex)
{
this->sex=sex;
}
string Student::getSex()
{
return sex;
}
void Student::setstuNumber(int stuNumber)
{
this->stuNumber=stuNumber;
}
int Student::getstuNumber()
{
return stuNumber;
}
void Student::Display()
{
cout<<getstuClass()<<" * "<<getstuName()<<" * "<<getSex()<<" * "<<getstuNumber()<<endl;
for (int i=0;i<nextJect;i++)
{
cout<<mSubject[i].getsjName()<<":"<<mSubject[i].getRes()<<endl;
}
}
database.h
程序代码：#include <iostream>
#include <string>
#include "student.h"
using namespace std;
namespace mydb{
const int maxStu=100; /*最多学生数量*/
class Database
{
public:
Database();
Student& addStudent(string stuClass,string stuName,string sex,int stuNumber); //添加一个学生
Student& InitJect(int i,string ject); //初始化科目
Student& AddRes(int i,float res);
Student& getStudent(string stuName); //通过姓名查询学生
Student& getStudent(int stuNumber); //通过学号查询学生
void DisPlayStu(string stuName);
void DisPlayStu(int stuNumber);
/*void delStudent(string stuName);*/
void delStudent(int stuNumber);
bool IsStuNumber(int stuNumber);
void displayall(); //显示所有学生信息，包括成绩
private:
Student mStudent[maxStu];
int nextStu;
int nextDbRes;
int nextDbJect;
int cDbRes;
int cDbJect;
int stuplase;//学生在链表的位置
};
}database.cpp程序代码：#include "database.h"
using namespace mydb;
Database::Database()
{
nextDbRes=nextDbJect=nextStu=0;
cDbRes=0;
cDbJect=0;
}
Student& Database::addStudent(string stuClass,string stuName,string sex,int stuNumber)
{
if (nextStu >= maxStu) {
cerr << "达到人数上限" << endl;
throw exception();
}
Student& theStudent=mStudent[nextStu++];
theStudent.setstuClass(stuClass);
theStudent.setstuName(stuName);
theStudent.setSex(sex);
theStudent.setstuNumber(stuNumber);
return theStudent;
}
Student& Database::AddRes(int i,float res)
{
if (nextDbRes >= i&&nextDbRes>=maxJect) {
cerr << "达到科目上限" << endl;
throw exception();
}
if (cDbRes==i)
{
nextDbRes++;
cDbRes=0;
}
cDbRes++;
Student& theStudent=mStudent[nextDbRes];
theStudent.addRes(res);
return theStudent;
}
Student& Database::getStudent(string stuName)
{
for (int i=0;i<maxStu;i++)
{
if (mStudent[i].getstuName()==stuName)
{
stuplase=i;
return mStudent[i];
}
}
throw exception();
}
Student& Database::getStudent(int stuNumber)
{
for (int i=0;i<maxStu;i++)
{
if (mStudent[i].getstuNumber()==stuNumber)
{
stuplase=i;
return mStudent[i];
}
}
throw exception();
}
void Database::DisPlayStu(string stuName)
{
getStudent(stuName).Display();
}
void Database::DisPlayStu(int stuNumber)
{
getStudent(stuNumber).Display();
}
void Database::delStudent(int stuNumber)
{
getStudent(stuNumber);
if (stuplase==nextStu)
{
nextStu--;
}
else
{
for (int i=stuplase;i<nextStu;i++)
{
mStudent[i]=mStudent[i+1];
}
nextStu--;
}
}
//void Database::delStudent(string stuName)
//{
// getStudent(stuName);
// for (int i=stuplase;i<maxStu;i++)
// {
// mStudent[i]=mStudent[i+1];
// }
// nextStu--;
//}
Student& Database::InitJect(int i,string ject)
{
if (nextDbJect >= i&&nextDbJect>=maxJect) {
cerr << "达到科目上限" << endl;
throw exception();
}
if (cDbJect==i)
{
nextDbJect++;
cDbJect=0;
}
cDbJect++;
Student& theStudent=mStudent[nextDbJect];
theStudent.addJect( ject);
return theStudent;
}
bool Database::IsStuNumber(int stuNumber)
{
for (int i=0;i<maxStu;i++)
{
if (mStudent[i].getstuNumber()==stuNumber)
{
return false;
}
}
return true;
}
void Database::displayall()
{
cout<<"**班级******姓名******性别******学号**"<<endl;
for (int i=0;i<nextStu;i++)
{
mStudent[i].Display();
}
}
main.cpp程序代码：#include <cstdlib>
#include <iostream>
#include "database.h"
using namespace std;
using namespace mydb;
int gNum; //设置科目数量的全局变量
string className; //班级名称
string initJ[maxJect];//初始化科目
int displayMenu(); //显示操作菜单
int cerrcin(int& istr);
bool addStudent(Database& adb);//增加学生
void delStudent(Database& adb);
void addRes(Database& adb);
void InitJect(Database& adb);
void getStudentNum(Database& adb);
void getStudentName(Database& adb);
int main(int argc, char *argv[])
{
Database studentDB;
bool done=false;
cout<<"欢迎使用文字版本学生成绩管理系统!\n请输入您所在的班级的名称\n>";
cin>>className;
InitJect(studentDB);
while (!done)
{
int selection=displayMenu();
switch(selection)
{
case 1:
if ( addStudent(studentDB))
{
addRes(studentDB);
}
break;
case 2:
delStudent(studentDB);
break;
case 3:
studentDB.displayall();
break;
case 4:
getStudentNum(studentDB);
break;
case 5:
getStudentName(studentDB);
break;
case 6:
cout<<"输入班级名称"<<endl;
cin>>className;
InitJect(studentDB);
break;
case 0:
done=true;
break;
default:
cerr<<"未知错误"<<endl;
}
}
system("PAUSE");
return EXIT_SUCCESS;
}
void InitJect(Database& adb)
{
int num;
cout<<"请初始化科目\n输入科目数量，最多不能超过5科"<<endl;
while(cerrcin(num))
{
if (num>maxJect)
{
cout<<"请重新输入，最多不能超过5科"<<endl;
continue;
}
else
break;
}
gNum=num;
int j;
string ject;
for (int i=0;i<num;i++)
{
cout<<"输入第"<<i+1<<"科目的名称"<<endl;
while(cin>>ject)
{
for (j=0;j<i;j++)
{
if(initJ[j]==ject)
{
cout<<"有相同的科目，请重新输入"<<endl;
break;
}
}
if(j==i)
{
j=0;
initJ[i]=ject;
break;
}
}
}
}
int displayMenu()
{
int selection;
cout << endl;
cout << "学生成绩管理系统" << endl;
cout << "-----------------" << endl;
cout << "1) 添加一个学生" << endl;
cout << "2) 删除一个学生" << endl;
cout << "3) 显示所有学生信息" << endl;
cout << "4) 通过学号查询学生信息" << endl;
cout << "5) 通过姓名查询学生信息" << endl;
cout << "6) 换班级" << endl;
cout << "0) 退出" << endl;
cout << endl;
cout << "---> ";
cerrcin(selection);
return selection;
}
bool addStudent(Database& adb)
{
string stuName;
string sex;
int stuNumber;
cout<<"输入姓名"<<endl;
cin>>stuName;
cout<<"输入性别"<<endl;
while(cin>>sex)
{
if (sex=="男"||sex=="女")
{
break;
}
cout<<"输入错误，只能输入‘男’或者‘女’\n";
}
cout<<"输入学号"<<endl;
while(cerrcin(stuNumber))
{
if (!adb.IsStuNumber(stuNumber))
{
cout<<"已经存在这个学号了，请重新输入"<<endl;
continue;
}
else
break;
}
try {
adb.addStudent(className,stuName,sex,stuNumber);
} catch (std::exception ex) {
cerr << "请删除学生" << endl;
return false;
}
return true;
}
void addRes(Database& adb)
{
float res;
string ject;
for (int i=0;i<gNum;i++)
{
ject="a";
cout<<"输入 ’"<<initJ[i]<<"‘科目的成绩"<<endl;
while(cin >> res,!cin.eof())
{
if (cin.bad())
{
cerr<<"输入出现严重错误，将退出程序";
exit(0);
}
if (cin.fail())
{
cerr<<"输入错误重新输入，只能输入数字\n";
cin.clear();
cin.sync();
continue;
}
if (cin.good())
{
if (res<0)
{
cout<<"请重新输入，没有负数分数"<<endl;
continue;
}
break;
}
}
adb.InitJect(gNum,initJ[i]);
adb.AddRes(gNum,res);
}
}
void getStudentNum(Database& adb)
{
int studentNumber;
cout <<"输入学生学号";
cerrcin(studentNumber);
try {
adb.DisPlayStu(studentNumber);
} catch (std::exception ex) {
cerr << "没有这个学生" << endl;
}
}
void getStudentName(Database& adb)
{
string studentName;
cout <<"输入学生姓名";
cin >> studentName;
try {
adb.DisPlayStu(studentName);
} catch (std::exception ex) {
cerr << "没有这个学生" << endl;
}
}
void delStudent(Database& adb)
{
int studentNumber;
cout <<"输入学生学号";
cerrcin(studentNumber);
try {
adb.delStudent(studentNumber);
} catch (std::exception ex) {
cerr << "没有这个学生" << endl;
}
}
int cerrcin(int& istr)
{
while(cin >> istr,!cin.eof())
{
if (cin.bad())
{
cerr<<"输入出现严重错误，将退出程序";
exit(0);
}
if (cin.fail())
{
cerr<<"输入错误重新输入，只能输入数字\n--->";
cin.clear();
cin.sync();
continue;
}
if (cin.good())
{
break;
}
}
return 1;
}
顺便上传一个附件：可以用dev-c++4.9.9.2直接打开编译......
学生成绩管理系统.rar
(128.28 KB)
