C语言问题！请进！
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用C语言画分形图 ·····
#include "graphics.h"#include "stdlib.h"
#include "stdio.h"
#include "fcntl.h"
#include "dos.h"
union REGS r;
struct MOUSE
int getit;
int x1;
int y1;
int x2;
int y2;
ms;
void MSB(float,float,float,float,int,int,int,int,int);
void mouse_drop(struct MOUSE *in);
/*定义鼠标拖动的函数,通过鼠标的按下、放开来选定一个矩形区域*/
int data_processor(struct MOUSE m,float *x0,float *x1,float *y0,float *y1);
/*将鼠标选定的区域转化成MSB集的区域*/
void mouse_IQR(int *num,int *bx,int *cx,int *dx)
/*调用鼠标的中断，在这里定义函数让下面一些函数调用，以减少编程的重复，
在这里，通过int86函数（在dos.h里）调用中断，鼠标的中断号为：33h */
r.x.ax=*num;
r.x.bx=*bx;
r.x.cx=*cx;
r.x.dx=*dx;
int86(0x33,&r,&r);
*bx=r.x.bx;
*cx=r.x.cx;
*dx=r.x.dx;
*num=r.x.ax;
int init_mouse()
/*初试化鼠标，查询鼠标驱动有没有安装，功能号为 0 */
int num=0;
mouse_IQR(&num,&num,&num,&num);
if(num!=-1)
return 1;
else return 0;
void mouse_show();
void mouse_position(int *x,int *y)
/*鼠标在屏幕中所处的位置*/
int button=0,num=3;
mouse_show();
mouse_IQR(&num,&button,x,y);
void mouse_hide()
/*隐藏鼠标光标*/
int num=2;
mouse_IQR(&num,&num,&num,&num);
void mouse_show()
/*显示鼠标光标*/
int num=1;
mouse_IQR(&num,&num,&num,&num);
int mouse_click(int k)
/*查询鼠标是使用左键（返回1）还是右键（返回2）*/
int bx=0,num=3;
mouse_IQR(&num,&bx,&num,&num);
return(bx&k);
void waiton(int buttom)
/*等待鼠标动作*/
if(buttom==1)
while(mouse_click(1));
if(buttom==2)
while(mouse_click(2));
int mousexy(int x1,int y1,int x2,int y2)
/*查询鼠标是否在区域内*/
int x,y;
mouse_position(&x,&y);
if(x>x1&&xy1&&yL||m<-1e10) break;
x=xx;
y=yy;
color=n%16;
putpixel(x1+i,y1+j,color);
void mouse_drop(struct MOUSE *in)
char out[20];
int x,y;
int oldx,oldy;
struct MOUSE r;
r=*in;
setwritemode(1);
setlinestyle(USERBIT_LINE,0x7777,1);
setcolor(15);
if(r.getit==1)
mouse_hide();
rectangle(r.x1,r.y1,r.x2,r.y2);
mouse_show();
mouse_position(&x,&y);
r.x1=x;
r.y1=y;
oldx=x;
oldy=y;
r.getit=1;
mouse_hide();
rectangle(x,y,x,y);
mouse_show();
while(mouse_click(1)) mouse_position(&x,&y);
if(oldx!=x || oldy!=y)
mouse_hide();
rectangle(r.x1,r.y1,x,y);
rectangle(r.x1,r.y1,oldx,oldy);
mouse_show();
oldx=x;
oldy=y;
if(mouse_click(2))
r.getit=0;
mouse_hide();
rectangle(r.x1,r.y1,oldx,oldy);
mouse_show();
waiton(2);
break;
if(r.getit==1)
r.x2=x;
r.y2=y;
if(x==r.x1 && r.y1==y)
r.getit=0;
else
r.getit=1;
setlinestyle(SOLID_LINE,0,1);
*in=r;
waiton(1);
setwritemode(0);
setmouse(0,0,getmaxx(),getmaxy());
int data_processor(struct MOUSE m,float *x0,
float *x1,float *y0,float *y1)
float d1,l1,d2,l2,d,l;
float xx0,xx1,yy0,yy1,x,y;
d1=*x1-*x0;
l1=*y1-*y0;
d2=637;
l2=477;
xx0=m.x1;
xx1=m.x2;
yy0=m.y1;
yy1=m.y2;
if(xx0==xx1 || yy0==yy1) return(0);
if(xx0>xx1)
x=xx0;
xx0=xx1;
xx1=x;
if(yy0>yy1)
x=yy0;
yy0=yy1;
yy1=x;
d=1;
l=1;
x=*x0;
y=*y0;
*x0=x+(xx0-d)*d1/d2;
*x1=x+(xx1-d)*d1/d2;
*y0=y+(yy0-l)*l1/l2;
*y1=y+(yy1-l)*l1/l2;
if(*x0==*x1 || *y0==*y1)
return(0);
else
return(1);
不懂再问！ 参考技术A 2！＋4！＋6！＋..＋16! 自己去想！呵呵
C语言高手请进!!!
大学1年级C语言程序实践题:
一.学生管理系统,要求将学生的学号.姓名.性别.成绩以二叉树或动态链表存放在studio,txt文件中.通过以下拉菜单完成以下功能:
1.插入学生成绩
2.一定条件修改某些学生成绩
3.一定条件删除某些学生成绩
4.条件查询和模糊查询
5.将学生消息按成绩降序排列 放在studio,txt文件中
6.按不同分数段统计学生数,以饼图显现
二.扑克牌排序
从54张中选10张,背面朝上,然后逐一掀开,按数字大小排列.
数字相同时:黑桃>红桃>梅花>方片
用气泡法或选择法排序,并且动态显示排序过程
三.图书馆管理系统,要求实现用户(师生)与图书的基本消息管理与借还操作
我自己已经写出程序来了,并且已经交了(就是有点太复杂不实用),但是我想知道什么是更好最好的答案
#include<fstream>
#include<string>
#include <iomanip>
#include<windows.h>
#include<ctime>
using namespace std;
const int NAME_NUM=30;
struct student
char name[NAME_NUM];
float num;
float chinaNum;
float englishNum;
float mathNum;
float average;
float result;
int pos;
student *next;
;
void Print(student *head);
void InsertFront(student* &head, student *pNew);
void InsertRear(student* &head, student *pNew);
student* Find(student *head, char *findStr, char type);
student* Read();
void Write(student* head);
void ShowList(student* head);
int GetLength(student* head);
void Delete(student* &head, char *delStr,int delNum);
void FindMaxOrMin(student *head,char type,char maxOrMin);
void Reword(student *pStd);
void Sort(student *&head, char type,char maxOrMin);
void Count(student *&head);
void DeleteAll(student *&head);
bool Enter(char type);
void SetTitle(bool isLoad);
void AboutMe();
void ChaXun(string str,student *head);
void PaiMing(string str, student* head);
void ShanChu(string str, student *&head);
void XianShi(string str, student *head);
void XuiGai(string str, student *&head);
void ZengJia(string str, student* &head);
int Run();
bool Enter(char type)
ofstream out("Password.pwd",ios::app);
ifstream in("Password.pwd");
string s[2];
int num=0;
string zhangHao;
string miMa;
while(!in.eof())
in>>s[num];
num++;
if(num==2)
break;
if(s[0].compare("")==0 || type=='2' )
if(s[0].compare("")==0 && type!='2')
cout<<"你是第一次使用本程序,请设置帐号和密码."<<endl;
else
bool isLoad=false;
isLoad=Enter('1');
if(isLoad==true)
cout<<"修改用户."<<endl;
out.close();
out.open("Password.pwd",ios::trunc);
else
cout<<"你输入的密码错误."<<endl;
cout<<"你不是管理员不能修改密码."<<endl;
return false;
cout<<"请输入您的新帐号: ";
cin>>s[0];
cout<<"请输入您的新密码: ";
cin>>s[1];
string s1,s2;
for(int i=0; i<s[0].size(); i++)
s1+=char(int(s[0][i])+11);
for( i=0; i<s[1].size(); i++)
s2+=char(int(s[1][i])+11);
s[0]=s1;
s[1]=s2;
for( i=0; i<=1; i++)
out<<s[i]<<" ";
out.close();
string s1,s2;
for(int i=0; i<s[0].size(); i++)
s1+=char(int(s[0][i])-11);
for( i=0; i<s[1].size(); i++)
s2+=char(int(s[1][i])-11);
cout<<"请输入您的帐号: ";
cin>>zhangHao;
cout<<"请输入您的密码: ";
cin>>miMa;
if(zhangHao.compare(s1)==0 && miMa.compare(s2)==0)
return true;
else
return false;
return false;
void Print(student *head)
student *pHead=head;
int num=strlen(head->name);
while(head)
if(num<strlen(head->name))
num=strlen(head->name);
head=head->next;
head=pHead;
cout<<setw(num)<<head->name<<setw(8)
<<head->num<<setw(10)<<head->chinaNum
<<setw(10)<<head->mathNum<<setw(10)
<<head->englishNum<<setw(8)<<head->result
<<setw(8)<<head->average<<setw(5)<<head->pos<<endl;
void ShowList(student* head)
cout<<"姓名:"<<setw(8)<<"座号:"<<setw(10)
<<"语文分数:"<<setw(10) <<"数学分数:"
<<setw(10)<<"英语分数:"<<setw(8)<<"总分数:"
<<setw(8)<<"平均分:"<<setw(6)<<"名次:"<<endl<<endl;
while(head)
Count(head);
Print(head);
head=head->next;
cout<<endl;
void Write(student* head)
ofstream out("Student.dat",ios::trunc);
while(head)
Count(head);
out.write((char*)head,sizeof(student));
head=head->next;
out.close();
student* Read()
ifstream in("Student.dat");
student *head;
student *pP;
student *pEnd;
pP=new student;
pEnd=head=pP;
student *pS=new student;
memset(pS->name,0,NAME_NUM);
in.read((char*)pS,sizeof(student));
if(strcmp(pS->name,"\0")==0)
return NULL;
strcpy(pP->name,pS->name);
pP->num=pS->num;
pP->chinaNum=pS->chinaNum;
pP->englishNum=pS->englishNum;
pP->mathNum=pS->mathNum;
while(!in.eof())
in.read((char*)pS,sizeof(student));
pEnd->next=pP;
pEnd=pP;
pP=new student;
strcpy(pP->name,pS->name);
pP->num=pS->num;
pP->chinaNum=pS->chinaNum;
pP->englishNum=pS->englishNum;
pP->mathNum=pS->mathNum;
pEnd->next=NULL;
delete pP;
return head;
student* Find(student *head,char *findStr, char type)
/*参数说明:
type=='1' 按 名字 查找
type=='2' 按 座号 查找
type=='3' 按 语文 查找
type=='4' 按 数学 查找
type=='5' 按 英语 查找
type=='6' 按 总分 查找
type=='7' 按 平均分 查找
type=='8' 按 排名 查找 //没有实现
*/
bool isFind=false;
student *firstStd=NULL;
cout<<"姓名:"<<setw(8)<<"座号:"<<setw(10)
<<"语文分数:"<<setw(10) <<"数学分数:"
<<setw(10)<<"英语分数:"<<setw(8)<<"总分数:"
<<setw(8)<<"平均分:"<<setw(5)<<"名次:"<<endl<<endl;
while(head)
if(type=='1')
if(strcmp(head->name,findStr)==0)
if(firstStd==NULL)
firstStd=head;
Print(head);
isFind=true;
if(head->next==NULL)
return firstStd;
else if(type=='2')
if(int(head->num)==int(atof(findStr)))
if(firstStd==NULL)
firstStd=head;
Print(head);
isFind=true;
if(head->next==NULL)
return firstStd;
else if(type=='3')
if(int(head->chinaNum)==int(atof(findStr)))
if(firstStd==NULL)
firstStd=head;
Print(head);
isFind=true;
if(head->next==NULL)
return firstStd;
else if(type=='4')
if(int(head->mathNum)==int(atof(findStr)))
if(firstStd==NULL)
firstStd=head;
Print(head);
isFind=true;
if(head->next==NULL)
return firstStd;
else if(type=='5')
if(int(head->englishNum)==int(atof(findStr)))
if(firstStd==NULL)
firstStd=head;
Print(head);
isFind=true;
if(head->next==NULL)
return firstStd;
else if(type=='6')
if(int(head->result)==int(atof(findStr)))
if(firstStd==NULL)
firstStd=head;
Print(head);
isFind=true;
if(head->next==NULL)
return firstStd;
else if(type=='7')
if(int(head->average)==int(atof(findStr)))
if(firstStd==NULL)
firstStd=head;
Print(head);
isFind=true;
if(head->next==NULL)
return firstStd;
else if(type=='8')
if(int(head->pos)==int(atof(findStr)))
if(firstStd==NULL)
firstStd=head;
Print(head);
isFind=true;
if(head->next==NULL)
return firstStd;
head=head->next;
if(isFind==false)
cout<<"找不到你要找的记录."<<endl;
return NULL;
return firstStd;
void InsertRear(student* &head,student *pNew)
student *pEnd,*pHead,*pS=new student;
if(head==NULL)
InsertFront(head,pNew);
return ;
pHead=head;
while(head)
pEnd=head;
if(head->next==NULL)
break;
head=head->next;
strcpy(pS->name,pNew->name);
pS->num=pNew->num;
pS->chinaNum=pNew->chinaNum;
pS->englishNum=pNew->englishNum;
pS->mathNum=pNew->mathNum;
pS->next=NULL;
pEnd->next=pS;
head=pHead;
void InsertFront(student* &head, student *pNew)
student *pHead=new student;
strcpy(pHead->name,pNew->name);
pHead->num=pNew->num;
pHead->chinaNum=pNew->chinaNum;
pHead->englishNum=pNew->englishNum;
pHead->mathNum=pNew->mathNum;
pHead->next=head;
head=pHead;
int GetLength(student *head)
int len=0;
while(head)
len++;
head=head->next;
return len;
void Delete(student* &head, char *delStr,int delNum)
student* pDel,*pNew,*pHead;
bool isFind=false;
pHead=head;
if(strcmp(head->name,delStr)==0)
pNew=head->next;
delete head;
head=pNew;
if(delNum==2)
cout<<endl<<"因为要删除的记录在前面,所有只删除第一记录."<<endl;
return ;
while(head->next)
if(delNum==2)
if(strcmp(head->next->name,delStr)==0)
pNew=head->next->next;
pDel=head->next;
delete pDel;
head->next=pNew;
head=pHead;
isFind=true;
else
if(strcmp(head->next->name,delStr)==0)
pNew=head->next->next;
pDel=head->next;
delete pDel;
head->next=pNew;
head=pHead;
return ;
head=head->next;
head=pHead;
if(isFind==false)
cout<<"找不到你要删除的记录."<<endl;
else
cout<<"删除记录成功."<<endl;
void FindMaxOrMin(student *head,char type,char maxOrMin)
/*参数说明:
type=='1' 按 语文 查找
type=='2' 按 数学 查找
type=='3' 按 英语 查找
type=='4' 按 总分 查找
type=='5' 按 平均分 查找
type=='6' 按 排名 查找
*/
int maxNum;
student *pHead=head;
if(type=='1')
maxNum=int(head->chinaNum);
else if (type=='2')
maxNum=int(head->mathNum);
else if (type=='3')
maxNum=int(head->englishNum);
else if (type=='4')
maxNum=int(head->result);
else if (type=='5')
maxNum=int(head->average);
else if (type=='6')
maxNum=head->pos;
else
cout<<"你输入错误,请重新输入."<<endl;
return ;
while(head)
if(maxOrMin=='1')
if(type=='1')
if(maxNum<int(head->chinaNum))
maxNum=int(head->chinaNum);
else if (type=='2')
if(maxNum<int(head->mathNum))
maxNum=int(head->mathNum);
else if (type=='3')
if(maxNum<int(head->englishNum))
maxNum=int(head->englishNum);
else if (type=='4')
if(maxNum<int(head->result))
maxNum=int(head->result);
else if (type=='5')
if(maxNum<int(head->average))
maxNum=int(head->average);
else if (type=='6')
if(maxNum<head->pos)
maxNum=head->pos;
else
if(type=='1')
if(maxNum>int(head->chinaNum))
maxNum=int(head->chinaNum);
else if (type=='2')
if(maxNum>int(head->mathNum))
maxNum=int(head->mathNum);
else if (type=='3')
if(maxNum>int(head->englishNum))
maxNum=int(head->englishNum);
else if (type=='4')
if(maxNum>int(head->result))
maxNum=int(head->result);
else if (type=='5')
if(maxNum>int(head->average))
maxNum=int(head->average);
else if (type=='6')
if(maxNum>head->pos)
maxNum=head->pos;
head=head->next;
head=pHead;
cout<<"姓名:"<<setw(8)<<"座号:"<<setw(10)
<<"语文分数:"<<setw(10) <<"数学分数:"
<<setw(10)<<"英语分数:"<<setw(8)<<"总分数:"
<<setw(8)<<"平均分:"<<setw(5)<<"名次:"<<endl<<endl;
while(head)
if(type=='1')
if(int(head->chinaNum)==maxNum)
Print(head);
else if (type=='2')
if(int(head->mathNum)==maxNum)
Print(head);
else if (type=='3')
if(int(head->englishNum)==maxNum)
Print(head);
else if (type=='4')
if(int(head->result)==maxNum)
Print(head);
else if (type=='5')
if(int(head->average)==maxNum)
Print(head);
else if (type=='6')
if(head->pos==maxNum)
Print(head);
head=head->next;
void Reword(student *pStd)
if(pStd!=NULL)
cout<<"请输入学生的新名字:"<<endl;
cin>>pStd->name;
cout<<"请输入学生的座号"<<endl;
cin>>pStd->num;
cout<<"请输入学生的语文分数"<<endl;
cin>>pStd->chinaNum;
cout<<"请输入学生的数学分数"<<endl;
cin>>pStd->mathNum;
cout<<"请输入学生的英语分数"<<endl;
cin>>pStd->englishNum;
else
return ;
void Sort(student *&head, char type,char maxOrMin)
/*参数说明:
type=='1' 按 语文 排列
type=='2' 按 数学 排列
type=='3' 按 英语 排列
type=='4' 按 总分 排列
type=='5' 按 平均分 排列
type=='6' 按 座号 排列
*/
student *pHead,*pH;
pHead=pH=head;
int len=GetLength(head);
float *array=new float[len];
int i;
int x=0;
float num=0;
while(head)
Count(head);
if(type=='1')
num=head->chinaNum;
else if(type=='2')
num=head->mathNum;
else if(type=='3')
num=head->englishNum;
else if(type=='4')
num=head->result;
else if(type=='5')
num=head->average;
else if(type=='6')
num=head->num;
array[x]=num;
x++;
head=head->next;
head=pHead;
if(maxOrMin=='1')
for( i=1; i<len; i++)
for(int j=0; j<len-i; j++)
if(array[j]<array[j+1])
float num;
num=array[j];
array[j]=array[j+1];
array[j+1]=num;
else
for( i=1; i<len; i++)
for(int j=0; j<len-i; j++)
if(array[j]>array[j+1])
float num;
num=array[j];
array[j]=array[j+1];
array[j+1]=num;
int pos=1;
for(i=0; i<len; i++)
head=pHead;
while(head)
if(type=='1')
num=head->chinaNum;
else if(type=='2')
num=head->mathNum;
else if(type=='3')
num=head->englishNum;
else if(type=='4')
num=int(head->result);
else if(type=='5')
num=int(head->average);
else if(type=='6')
num=int(head->num);
int n=0;
if(int(array[i])==int(num))
if(int(array[i])!=int(array[i+1]))
if(n==0)
n=pos;
head->pos=pos;
pos++;
else
head->pos=n;
head=head->next;
head=pH;
delete []array;
void Count(student *&head)
head->result=head->chinaNum+head->englishNum+head->mathNum;
head->average=head->result/3;
void DeleteAll(student* &head)
student *cp,*np;
cp=head;
while(cp)
np=cp->next;
delete cp;
cp=np;
head=NULL;
void ChaXun(string str,student *head)
Sort(head,'4','1');
cout<<"欢迎使用查询功能"<<endl<<endl;
cout<<"请输入你要按什么查询 1->一般查询 2->查找最多 3->查找最少"<<endl;
string s;
cin>>s;
while(s[0]!='1'&&s[0]!='2'&&s[0]!='3')
cout<<"你输入错误,请重新输入."<<endl;
cin>>s;
if(s[0]=='1')
cout<<"按什么查询?"<<endl;
cout<<"1->姓名 2->座号 3->语文成绩 4->数学成绩 "
<<"5->英语成绩 6->总分 7->平均分 8->排名"<<endl;
cin>>str;
while(str[0]!='1' && str[0]!='2' &&
str[0]!='3' && str[0]!='4' &&
str[0]!='5' && str[0]!='6' &&
str[0]!='7' && str[0]!='8' )
cout<<"你输入错误,请重新输入."<<endl;
cin>>str;
char findStr[30];
cout<<"请输入要查找的关键字或关键数:"<<endl;
cin>>findStr;
switch(str[0])
case '1':
Find(head,findStr,'1');
break;
case '2':
Find(head,findStr,'2');
break;
case '3':
Find(head,findStr,'3');
break;
case '4':
Find(head,findStr,'4');
break;
case '5':
Find(head,findStr,'5');
break;
case '6':
Find(head,findStr,'6');
break;
case '7':
Find(head,findStr,'7');
break;
case '8':
Find(head,findStr,'8');
break;
else if(s[0]=='2')
cout<<"请输入要按什么查询?"<<endl;
cout<<"1->语文成绩 2->数学成绩 "
<<"3->英语成绩 4->总分 5->平均分 6->排名"<<endl;
string s;
cin>>s;
switch(s[0])
case '1':
FindMaxOrMin(head,'1','1');
break;
case '2':
FindMaxOrMin(head,'2','1');
break;
case '3':
FindMaxOrMin(head,'3','1');
break;
case '6':
FindMaxOrMin(head,'6','1');
break;
case '5':
FindMaxOrMin(head,'5','1');
break;
default:
FindMaxOrMin(head,'4','1');
break;
else if(s[0]=='3')
cout<<"请输入要按什么查询?"<<endl;
cout<<"1->语文成绩 2->数学成绩 "
<<"3->英语成绩 4->总分 5->平均分 6->排名"<<endl;
string s;
cin>>s;
switch(s[0])
case '1':
FindMaxOrMin(head,'1','2');
break;
case '2':
FindMaxOrMin(head,'2','2');
break;
case '3':
FindMaxOrMin(head,'3','2');
break;
case '6':
FindMaxOrMin(head,'6','2');
break;
case '5':
FindMaxOrMin(head,'5','2');
break;
default:
FindMaxOrMin(head,'4','2');
break;
void ZengJia(string str, student* &head)
student *pNew=new student;
cout<<"欢迎使用增加功能"<<endl<<endl;
cout<<"请输入新学生的名字 :"<<endl;
cin>>pNew->name;
cout<<"请输入新学生的座号 :"<<endl;
cin>>pNew->num;
cout<<"请输入他的语文分数 :"<<endl;
cin>>pNew->chinaNum;
cout<<"请输入他的数学分数"<<endl;
cin>>pNew->mathNum;
cout<<"请输入他的英语分数"<<endl;
cin>>pNew->englishNum;
cout<<"插入记录的 (1->最前面 2->最后面)"<<endl;
cin>>str;
while(str[0]!='1' && str[0]!='2')
cout<<"你输入错误,请重新输入."<<endl;
cout<<"插入记录的 (1->最前面 2->最后面)"<<endl;
cin>>str;
if(str[0]=='1')
InsertFront(head,pNew);
else if(str[0]=='2')
InsertRear(head,pNew);
cout<<"新学生增加成功."<<endl;
void ShanChu(string str, student *&head)
char delStr[30];
cout<<"欢迎使用删除功能"<<endl<<endl;
cout<<"1->查询删除 2->全部删除"<<endl;
cin>>str;
while(str[0]!='1' && str[0]!='2')
cout<<"输入错误,请重新输入."<<endl;
cin>>str;
if(str[0]=='1')
cout<<"请输入要删除的关键字"<<endl;
cin>>delStr;
cout<<"1->删除第一条找到的记录 2->删除所有找到的记录"<<endl;
cin>>str;
while(str[0]!='1'&&str[0]!='2')
cout<<"你输入错误,请重新输入."<<endl;
cin>>str;
cout<<"你真的要删除吗? 1->删除 2->取消"<<endl;
string s;
cin>>s;
if(str[0]=='1')
if(str[0]=='1')
Delete(head,delStr,1);
else
Delete(head,delStr,2);
else
cout<<"你已经取消删除了."<<endl;
else
cout<<"你真的要删除全部数据吗?这样会使你的数据全部丢失哦."<<endl;
cout<<"1->全部删除 2->取消删除"<<endl;
cin>>str;
if(str[0]=='1')
DeleteAll(head);
else
cout<<"你已经取消删除了."<<endl;
void PaiMing(string str, student* head)
string s;
cout<<"欢迎使用排名功能"<<endl<<endl;
cout<<"排名选择: 1->升序 2->降序"<<endl;
cin>>s;
cout<<"请输入要按什么排名?"<<endl;
cout<<"1->语文成绩 2->数学成绩 3->英语成绩 "
<<"4->总分 5->平均分 6->座号"<<endl;
cin>>str;
while(str[0]!='1' && str[0]!='2' &&
str[0]!='3' && str[0]!='4' &&
str[0]!='5' && str[0]!='6' )
cout<<"你输入错误,请重新输入."<<endl;
cin>>str;
cout<<"姓名:"<<setw(8)<<"座号:"<<setw(10)
<<"语文分数:"<<setw(10) <<"数学分数:"
<<setw(10)<<"英语分数:"<<setw(8)<<"总分数:"
<<setw(8)<<"平均分:"<<setw(6)<<"名次:"<<endl<<endl;
if(s[0]=='2')
switch(str[0])
case '1':
Sort(head,'1','1');
break;
case '2':
Sort(head,'2','1');
break;
case '3':
Sort(head,'3','1');
break;
case '4':
Sort(head,'4','1');
break;
case '5' 参考技术A 我不是高手，不过我写过一个学生信息管理的东西，有源代码，
我贴在一个论坛上了。
http://bbs.bc-cn.net/dispbbs.asp?boardid=5&replyid=486453&id=83340&page=1&skin=0&star=1
你可以去看一下，交作业应该可以哈 。。。 参考技术B 课程设计之类的最好自己做,这样才能提高自己的c能力.
做完这几个题目就会发现你会喜欢上c的 参考技术C 我上大一的时候也做过这样的题,很有意思的.
当你做出的时候回感觉自己很有成就感的 ! 参考技术D hehe,我现在也不太会 这些题都在我油箱里，可是我不想给你，因为自己做才会提高~！
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