本文实例为大家分享了C++实现评教管理系统的具体代码,供大家参考,具体内容如下
#include<iostream>
#include<fstream>
#include<cstring>
#include <stdlib.h>
#include <conio.h>
#include<vector>
using namespace std;
int n;
class Student
{public:
char sname[20];
char snum[20];
char sclass[20];
void input();
};
void Student::input()
{
cout<<"请输入您的姓名:"; cin>>sname;
cout<<"请输入您的学号:"; cin>>snum;
cout<<"请输入您的班级:"; cin>>sclass;
cout<<"登陆成功!输入任意字符继续"; getch();
}
template<typename T1,typename T2,typename T3>
class Lesson
{public:
Lesson(){};
~Lesson(){};
T1 tname[20];
T2 tlesson[20];
T3 grade;
void display();
void input();
void show();
};
template<typename T1,typename T2,typename T3>
void Lesson<T1,T2,T3>::show()
{
cout<<"教师姓名:"<<tname<<endl;
cout<<"课程名称:"<<tlesson<<endl;
cout<<"评教分数:"<<grade<<endl;
}
class System
{public:
System(){};
~System(){};
void add();
int lname(char *x);
void find();
void change();
void dele();
void menu();
void display();
void save();
void read();
};
vector<Lesson<char,char,double> >v;
template<typename T1,typename T2,typename T3>
void Lesson<T1,T2,T3>::input()
{
cout<<"请输入教师姓名:"; cin>>tname;
cout<<"请输入课程名称:"; cin>>tlesson;
cout<<"请输入打分(0-100):"; cin>>grade;
try{ //异常处理
if(grade<0||grade>100) throw 0;
else
cout<<endl;}
catch(int)
{cout<<"输入数据错误,请重新输入";}
cout<<endl;
}
void System::read()
{
Lesson<char,char,double> ch;
ifstream infile("sys.txt",ios::binary);
if(!infile){
cout<<"文件打不开"<<endl;
}
infile.read((char*)&ch,sizeof(ch));
while(!infile.eof())
{
v.push_back(ch);
infile.read((char*)&ch,sizeof(ch));
cout<<"教师姓名:"<<ch.tname<<endl;
cout<<"课程名称:"<<ch.tlesson<<endl;
cout<<"评教分数:"<<ch.grade<<endl;
cout<<endl;
}
infile.close();
cout<<"读取成功"<<endl;
getch();
}
void System::save()
{
ofstream outfile("sys.txt",ios::binary);
Lesson<char,char,double>t;
vector<Lesson<char,char,double> >::iterator ap;
if(!outfile)
cout<<"文件不能被打开"<<endl;
else
{
for(ap=v.begin();ap!=v.end();ap++)
{
t=*ap;
outfile.write((char*)&t,sizeof(t));
cout<<"保存成功"<<endl;
}
outfile.close();
getch();
}
}
void System::display()
{
for(int i=0;i<n;i++)
{v[i].show();}
cout<<"输入任意字符继续"; getch();
}
void System::menu()
{
cout<<"--------------*评 教 管 理 系 统*-------------"<<endl;
cout<<"--------------*$1. 学生登陆界面*--------------"<<endl;
cout<<"--------------*$2. 增加评教信息*--------------"<<endl;
cout<<"--------------*$3. 更改评教信息*--------------"<<endl;
cout<<"--------------*$4. 查找评教信息*--------------"<<endl;
cout<<"--------------*$5. 显示评教信息*--------------"<<endl;
cout<<"--------------*$6. 删除评教信息*--------------"<<endl;
cout<<"--------------*$7. 保存相关数据*--------------"<<endl;
cout<<"--------------*$8. 读取相关数据*--------------"<<endl;
cout<<"--------------*$9. 退出评教系统*--------------"<<endl;
}
void System::add()
{
string h="y";
do{
Lesson<char,char,double>l;
l.input();
n++;
v.push_back(l);
cout<<"是否继续添加(y/n)?";
cin>>h;
}while(h=="y");
cout<<"添加成功!输入任意字符继续";
getch();
}
int System::lname(char *x)
{
int i;
for(i=0;i<n;i++)
{
if(strcmp(v[i].tlesson,x)==0)
{ return i;}
}
return -1;
}
void System::find()
{
char x[20];
int a;
cout<<"请输入要查找的课程名称:"; cin>>x;
a=lname(x);
if(a!=-1)
v[a].show();
else
cout<<"没有找到相关课程信息"<<endl;
cout<<"输入任意字符继续";
getch();
}
void System::change()
{
char b[20];
int k;
cout<<"请输入需要修改的课程名称:"; cin>>b;
k=lname(b);
if(k!=-1){
cout<<"已找到,请输入新的信息:"<<endl;
v[k].input();}
cout<<"输入任意字符继续:";
getch();
}
void System::dele()
{
char c[20];
int d;
cout<<"请输入要删除的课程名称:"; cin>>c;
d=lname(c);
if(d!=-1)
{for(;d<n-1;d++)
{strcpy(v[d].tname,v[d+1].tname);
strcpy(v[d].tlesson,v[d+1].tlesson);
v[d].grade==v[d+1].grade;
}
n--;
}
else
cout<<"输入错误,找不到该课程信息"<<endl;
cout<<"输入任意字符继续";
getch();
}
int main()
{
Student x;
System y;
int a;
string ss="y";
do{
system("cls");
cout<<"====================欢迎进入评教管理系统!===================="<<endl;
y.menu() ;
cout<<"请输入相应阿拉伯数字:";
cin>>a;
switch(a)
{
case 1:x.input();break;
case 2:y.add();break;
case 3:y.change();break;
case 4:y.find();break;
case 5:y.display();break;
case 6:y.dele();break;
case 7:y.save();break;
case 8:y.read();break;
case 9:ss="n";break;
}
}while(ss=="y");
return 0;
}
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持编程网。