答案：这个功能比较少，可能符合你的要求，对于查询功能，自己可以添加修改结构体，注意数据格式就行了，另外还有一个用类编写的，功能也多一些，要的话留邮箱
#include<iostream>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
using namespace std;
typedef struct stu
{
char name[20];
long int number;
int snum;
char 易做图[20];
char add[30] ;
char time[20];
char tel[20];
struct stu *next;
}stu,*student;
int init(student &s);
void insert(student &s);
void print(student &s);
int delete(student &s);
void find (student &s);
void findname(student &s);
void findnum(student &s);
void modifay(student &s);
void putfile(student &s);
void getfile(student &s);
void main()
{
student s;
init(s);
cout<<"欢迎使用学生管理系统."<<endl;
cout<<" "<<endl;
cout<<endl;
while(1)
{
int i;
mainint:
cout<<"请选择相关操作:"<<endl<<"1.建立学生资料文件."<<endl<<"2.浏览."<<endl<<"3.删除."<<endl;
cout<<"4.查询."<<endl<<"5.修改."<<endl<<"6.打开学生文件."<<endl<<"7.退出管理系统." <<endl<<"请选择:";
cin>>i;
if(i<0||i>7)
{
cout<<"输入了错误的数字,Again!"<<endl<<endl;
goto mainint;
}
switch(i)
{
case 1: insert(s);break;
case 2: print(s);
putfile(s);
break;
case 3: ldelete(s);break;
case 4: find(s);break;
case 5: modifay(s);
break;
case 6: getfile(s);break;
case 7: exit(0);
}
}
}
int init(student &s)
{
s=(student)malloc(sizeof(stu));
if (s)
{
s->next=NULL;
return 0;
}
else return -1;
}
void insert(student &s) //insert
{
cout<<endl;
student p,q;
p=(student)malloc(sizeof(stu));
cout<<"请输入学生信息："<<endl;
cout<<"姓名:";
cin>>p->name;
cout<<endl;
cout<<"学号:";
cin>>p->number;
cout<<endl;
cout<<"性别:";
cin>>p->易做图;
cout<<endl;
cout<<"家庭住址:" ;
cin>>p->add;
cout<<endl;
cout<<"出生年月:" ;
cin>>p->time;
cout<<endl;
cout<<"宿舍号:";
cin>>p->snum;
cout<<endl;
cout<<"宿舍号码:";
cin>>p->tel;
q=s;
while(!(q->next==NULL)&&(q->next->number<p->number))
q=q->next;
p->next=q->next;
q->next=p;
//if()p->next=NULL;
//free(p);
}
int ldelete(student &s) //delete
{
cout<<endl;
student p,a;
p=s ;
cout<<"请输入删除的学号:";
long int number;
cin>>number;
while(p)
{ if (p->number==number)
{
a->next=p->next;
free(p); return(0);}
else
{ a=p;
p=p->next;} }
cout<<"没有找到你要删除的选项!"<<endl<<endl;return(-1);
}
void print(student &s)
{
int a;
a=0;
student p;
p=s->next;
cout<<"姓名 "<<"学号 " <<"性别 "<<"家庭住址 "<<"出生年月 "<<"宿舍号"<<"宿舍号码"<<endl;
while(p)
{
a++;
cout<<p->name<<" "<<p->number<<" "<<p->易做图<<" "<<p->add<<" "<<p->time<<" "<<p->snum<<" "<<p->tel<<" "<<endl;
p=p->next;
}
cout<<endl;
if (a==0)
cout<<"还没有学生信息!"<<endl<<endl ;
}
void find (student &s) //find
{
findl:
cout<<"请选择查找方法:"<<endl<<"1.按姓名查找."<<endl<<"2.按学号查找."<<endl;
cout<<"请选择:";
int k;
cin>>k;
if(k<0||k>3)
{
cout<<"输了入错误数字,Again!"<<endl<<endl;
goto findl;
}
switch(k)
{
case 1: findname(s);break;
case 2: findnum(s);break;
}
}
void findname(student &s) //find by name
{
student p;
p=s->next;
cout<<"请输入姓名：";
char name[20];
int j;
j=0;
cin>>name;
cout<<"你要查找的资料是:"<<endl;
cout<<"姓名 "<<"学号 " <<"性别 "<<"家庭住址 "<<"出生日期 "<<"宿舍号 "<<"宿舍号码"<<endl;
while(p)
{
if (strcmp(p->name,name)==0)
{
cout<<p->name<<" "<<p->number<<" "<<p->易做图<<" "<<p->add<<" "<<p->time<<" "<<p->snum<<" "<<p->tel<<" "<<endl;
j++;
}
p=p->next;
}
cout<<endl;
if(j==0)
cout<<"对不起,没找到你要的信息!"<<endl<<endl ;
}
void findnum(student &s) //find by number
{
student p;
p=s->next;
cout<<"请输入学号：";
long int number;
int j;
j=0;
cin>>number;
cout<<"你要查找的资料是:"<<endl;
cout<<"姓名 "<<"学号 "<<"性别 "<<"家庭住址 "<<"出生日期 "<<"宿舍号 "<<"宿舍电话"<<endl;
while(p)
{
if (p->number==number)
{
cout<<p->name<<" "<<p->number<<" "<<p->易做图<<" "<<p->add<<" "<<p->time<<" "<<p->snum<<" "<<p->tel<<" "<<endl;
j++;
}
p=p->next;
}
cout<<endl;
if(j==0)
cout<<"对不起,没找到你要的信息"<<endl<<endl ;
}
void modifay(student &s) //modifay
{
student q,p,l,m;
int j;
j=0;
q=s->next;
l=s;
m=s;
cout<<"请输入要修改的学号:" ;
long int num;
cin>>num;
cout<<"姓名 "<<"学号 "<<"性别 "<<"家庭住址 "<<"入学时间 "<<"宿舍号 "<<"电话号码"<<endl;
while(q)
{
if (q->number==num)
{
cout<<"你要修改的信息是:"<<endl;
cout<<q->name<<" "<<q->number<<" "<<q->易做图<<" "<<q->add<<" "<<q->time<<" "<<q->snum<<" "<<q->tel<<" "<<endl;
j++;
p=(student)malloc(sizeof(stu));
cout<<"请输入新的学生信息:"<<endl;
cout<<"姓名:";
cin>>p->name;
cout<<endl;
cout<<"学号:";
cin>>p->number;
cout<<endl;
cout<<"年龄:";
cin>>p->age;
cout<<endl;
cout<<"性别:";
cin>>p->易做图;
cout<<endl;
cout<<"家庭住址:" ;
cin>>p->add;
cout<<endl;
cout<<"入学时间:" ;
cin>>p->time;
cout<<endl;
cout<<"电话号码:";
cin>>p->tel;
l->next=q->next;
free(q);
goto tt;
}
else
{
l=q;
q=q->next;
}
}
cout<<endl;
if (j==0) cout<<"没找到你要的数据!"<<endl<<endl ;
tt:
while(!(m->next==NULL)&&(m->next->number<p->number))
m=m->next;
p->next=m->next;
m->next=p;
}
void putfile(student &s)
{
student p;
p=s->next;
FILE *fp;
if((fp=fopen("information.txt","w"))==NULL)
{
cout<<"打不开文件"<<endl<<endl;
exit(0);
}
while(p)
{
if(fwrite(p,sizeof(struct stu),1,fp)!=1 )
{
cout<<"文件写入错误"<<endl<<endl;
return;
}
p=p->next;
}
fclose(fp) ;
}
void getfile(student &s)
{
student p,q;
q=s;
FILE *fp1 ;
if((fp1=fopen("information.txt","r"))==NULL)
{
cout<<"打不开文件"<<endl;
exit(0);
}
cout<<"姓名 "<<"学号 "<<"性别 "<<"家庭住址 "<<"入学时间 "<<"宿舍号 "<<"电话号码"<<endl;
p=(student)malloc(sizeof(stu));
while(fread(p,sizeof(struct stu),1,fp1)!=0)
{
c
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