- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
while(!in.eof())
{ if(strcpy(name,stu.sname)==0) {cout<<stu<<endl; flag=1;}
in.read((char*)&stu,sizeof(student));
}
break;
}
case 3: {
char dep[20];
cout<<"请输入要查询的学生的系别"<<endl;
out.close();
}
system("pause");
break;
}
}
void sselect()
{ while(1)
{ system("cls");
cout<<"***********请选择要查询的类别：*************"<<endFra Baidu bibliotek;
cout<<"***********按学生学号请按1：************* "<<endl;
cout<<"***********按学生姓名请按2：*************"<<endl;
cout<<"***********按学生系别请按3：*************"<<endl;
cout<<"***********按学生班级请按4：*************"<<endl;
cout<<"***********返回上一级界面请按5：*************"<<endl;
int sn;
cin>>sn;
while(sn>5||sn<1)
{
cout<<"选择的数据无效，请重新输入："<<endl;
cin>>sn;
}
cout<<endl;
ifstream in("e:\\student");
if(!in)
{ cout<<"打开学生信息文件失败！"<<endl;
return ;
in.read((char*)&stu,sizeof(student));
}
in.close();
if(flag1==1) cout<<"该学生已经在文件中存在不允许添加！" <<endl;
else
{ ofstream out("e:\\student",ios::app);
out.write((char*)&s,sizeof(student));
class student
{ public:
int sno;
char sname[20];
char sex[3];
int age;
char depart[20];
char classno[20];
char lianx[40];
//public:
friend void sselect();
friend void supdate();
}
break;
}
case 4: {
char clno[20];
cout<<"请输入要查询的学生的班级"<<endl;
cin>>clno;
student stu;
in.read((char*)&stu,sizeof(student));
friend void sdelet();
friend void saccount();
friend void sdisplay();
friend istream & operator >> (istream & in,student &stu)
{
in>>stu.sno>>stu.sname>>stu.sex>>stu.age>>stu.depart>>stu.classno>>stu.lianx;
in.read((char*)&stu,sizeof(student));
}
break;
}
case 2: {
char name[20];
cout<<"请输入要查询的学生的姓名"<<endl;
cin>>name;
student stu;
in.read((char*)&stu,sizeof(student));
#include<iostream.h>
#include<string.h>
#include<fstream.h>
#include <stdlib.h>
#include <time.h>
//using namespace std;
const int count =3;
class situaction;
ifstream in("e:\\student");
if(!in)
{
cout<<"打开学生信息文件失败！"<<endl;
return ;
}
student stu;
in.read((char*)&stu,sizeof(student));
while(!in.eof())
{ if(s.sno==stu.sno) {flag1=1; break;}
cin>>dep;
student stu;
in.read((char*)&stu,sizeof(student));
while(!in.eof())
{ if(strcmp(dep,stu.depart)==0) {cout<<stu<<endl; flag=1;}
in.read((char*)&stu,sizeof(student));
}
int flag=0;
switch(sn)
{
case 1: {
int no;
cout<<"请输入要查询的学生的学号"<<endl;
cin>>no;
student stu;
in.read((char*)&stu,sizeof(student));
while(!in.eof())
{ if(no==stu.sno) {cout<<stu<<endl; flag=1;}
return out;
}
friend void xkadd();
friend void sadd();
};
void sadd()
{ while(1)
{
int flag1=0;
student s;
cout<<"请输入要添加的学生的学号、姓名、性别、年龄、系别、班级、联系方式"<<endl;
cin>>s;
return in;
}
friend ostream & operator<< ( ostream & out,student &stu)
{
out<<stu.sno<<" "<<stu.sname<<" "<<stu.sex<<" "<<stu.age<<" "<<stu.depart<<" "<<stu.classno<<" "<<stu.lianx<<endl;
