c++学生系统代码3.txt

学生系统 计算学生分数.xxxxxxxxxx

#include<iostream> 
#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') 
{