学生成绩管理系统课程设计

#include<iostream> #include<string> #include<fstream> using namespace std; #define NULL 0 int n=0; class student {private: long xuehao; string mingzhi; char xingbie; int shuoxue; int yingyu; int chengxu; int PE; int suzhi; int qidaishi; int sum; float ave; student *next; public: long getxuehao(); string getmingzhi(); char getxingbie(); int getshuoxue(); int getyingyu(); int getchengxu(); int getPE(); int getsuzhi(); int getqidaishi(); int getsum(); float getave(); void save(student *); void Output(student*); void welcome(); void exchange(student *p1,student *p2); student *Creat(); student *dele(student *head); student *Lookup(student *head); student *total_ave(student *head); student *paixu(student *head); student *Modify(student *head); student *load(void); student *chakan(student *head); student *ave_search(student *head); student *sum_search(student *head); student *chakanyouxiu(student *p); }; long student::getxuehao() {return xuehao;} string student::getmingzhi() {return mingzhi;} char student::getxingbie() {return xingbie;} int student::getshuoxue() {return shuoxue;} int student::getyingyu() {return yingyu;} int student::getchengxu() {return chengxu;} int student::getPE() {return PE;} int student::getshuozhi() {return shuozhi;} int student::getqidaishi() {return qidaishi;} int student::getsum() {return sum;} float student::getave() {return ave;} void student::save(student *p1) { ofstream outfile("信息文件.dat",ios::out); if(!outfile) { char a; cerr<<"打开文件失败!"<<endl; cin>>a; exit(1); } while(p1!=0) { outfile<<p1->getxuehao()<<" "; outfile<<p1->getmingzhi()<<" "; outfile<<p1->getxingbie()<<" "; outfile<<p1->getshuoxue()<<" "; outfile<<p1->getyingyu()<<" "; outfile<<p1->getchengxu()<<" "; outfile<<p1->getPE()<<" "; outfile<<p1->getsuzhi()<<" "; outfile<<p1->getqidaishi()<<" "; p1=p1->next; } outfile.close(); cout<<"已保存!"<<endl; cout<<"回主页单请按0 "<<endl; } void student::Output(student *head) { student *p; cout<<"学生信息为:"<<endl; cout<<"学号 "<<"姓名 "<<"性别 "<<"高数 "<<"英语 " <<"程序 "<<"大学体育 "<<"数字逻辑 "<<"近代史 "<<"总分 "<<"平均分 "<<endl; p=head; if(head!=NULL) do {cout<<p->getxuehao()<<" "<<p->getmingzhi()<<" "<<p->getxingbie()<<" "<<p->getshuoxue() <<" "<<p->getyingyu()<<" "<<p->getchengxu()<<" "<<p->getPE() <<" "<<p->getsuzhi()<<" "<<p->getqidaishi()<<" "<<p->getsum()<<" "<<p->getave()<<endl; p=p->next; } while(p!=NULL); } void student::welcome() { cout<<endl<<endl; cout<<endl<<endl; cout<<" "<<endl; cout<<" "<<endl; cout<<" 我的成绩管理系统 "<<endl; cout<<" "<<endl; cout<<" 1 写入 2 显示 3 清除 4 查询 5 排序 "<<endl; cout<<" "<<endl; cout<<" 6 修改 7 存盘 8 查看 9 输出 "<<endl; cout<<" "<<endl; cout<<" "<<endl; cout<<" 请选项:"; cout<<" "<<endl; } student *student::Creat(void) { student *head=NULL; student *p1,*p2; char t='y'; p1=p2=new student; cout<<"欢迎进入学生信息建立系统!"<<endl; while(t=='y') { cout<<"学号"<<" "<<"姓名"<<" "<<"性别"<<" "<<"高数" <<" "<<"英语"<<" "<<"程序"<<" "<<"大学体育"<<" "<<"数字逻辑"<<" "<<"近代史"<<endl; cin>>p1->getxuehao()>>p1->getmingzhi()>>p1->getxingbie()>>p1->getshuoxue()>>p1->getyingyu()>>p1->getchengxu()>>p1->getPE()>>p1->getsuzhi()>>p1->getqidaishi(); n=n+1; if(n==1)head=p1; p2->next=p1; p2=p1; cout<<"请选择是否继续输入学生信息(y/n)?"; cin>>t; if(t=='y') p1=new student; continue; else if(t=='n')break; } p2->next=NULL; head=total_ave(head); cout<<"回主页请按0。"<<endl; return(head); } //清除 student *student::dele(student *head) { student *p1,*p2; int xuehao; char t='y'; cout<<"欢迎进入信息删除系统!"<<endl; while(t=='y') { cout<<"请输入要删除的学生的学号:"; cin>>xuehao; p1=head; while(xuehao!=p1->xuehao&&p1->next!=NULL) { p2=p1;p1=p1->next; } if(xuehao==p1->getxuehao()) { if(p1==head) head=p1->next; else p2->next=p1->next; cout<<"已删除:"<<getxuehao()<<endl; } cout<<"是否继续删除其他学生信息(y/n)?:"; cin>>t; if(t=='y')continue; else if(t=='n')break; } return(head); cout<<"回主页请按0。"<<endl; } // 查询 student *student::Lookup(student *head) { long getxuehao(); stu *p1,*p2; char t='y'; cout<<"欢迎进入查询系统!"<<endl; while(t=='y') { cout<<"请输入要查询的学生的学号:"; cin>>xuehao; p1=head; while(getxuehao()!=p1->getxuehao()&&p1->next!=NULL) { p2=p1;p1=p1->next; } if(getxuehao()==p1->getxuehao()) cout<<"该学生的信息为:"<<endl<<"高数:"<<p1->getshuoxue()<<"\t" <<"英语:"<<p1->getyinyu()<<"\t"<<"程序:"<<p1->getchengxu()<<"\t" <<"大学体育:"<<p1->getPE()<<"\t"<<"数字逻辑:"<<p1->getsuzhi()<<"近代史:"<<p1->getqidaishi()<<endl; cout<<"是否继续查询其他信息(y/n)?:"; cin>>t; if(t=='y')continue; else if(t=='n')break; } return(head); cout<<"回主页请按0。"<<endl; } // 总成绩 平均成绩 student *student::total_ave(student *head) { student *p; p=head; if(p->getxuehao()==NULL) cout<<"这是个空表"<<endl; while(p->next!=NULL) { p->getsum()=p->getshuoxue()+p->getyingyu()+p->getchengxu()+p->getPE()+p->getsuzhi()+p->getqidaishi(); p->getave()=p->getxuehao()/6; p=p->next; } p->getsum()=p->getshuoxue()+p->getyingyu()+p->getchengxu()+p->getPE()+p->getsuzhi()+p->getqidaishi(); p->getave()=p->getxuehao()/6; return(head); } // 交换 void student::exchange(student *p1,student *p2) { int s; string h; s=p1->getshuoxue();p1->getshuoxue()=p2->getshuoxue();p2->getshuoxue()=s; s=p1->getxuehao();p1->getxuehao()=p2->getxuehao();p2->getxuehao()=s; h=p1->getmingzhi();p1->getmingzhi()=p2->getmingzhi();p2->getmingzhi()=h; s=p1->getxingbie();p1->getxingbiee()=p2->getxingbie();p2->getxingbie()=s; s=p1->getyingyu(); p1->getyingyu()=p2->getyingyu();p2->getyingyu()=s; s=p1->getchengxu();p1->getchengxu()=p2->getchengxu();p2->getchengxu()=s; s=p1->getPE();p1->getPE()=p2->getPE();p2->getPE()=s; s=p1->getsuzhi();p1->getsuzhi()=p2->getsuzhi();p2->getsuzhi()=s; s=p1->getqidaishi();p1->getqidaishi()=p2->getqidaishi();p2->getqidaishi()=s; s=p1->getxuehao(); p1->getxuehao()=p2->getxuehao();p2->getxuehao()=s; s=p1->getave(); p1->getave()=p2->getave(); p2->getave()=s; } student *student::paixu(student *head) { student *p1,*p2; p1=head; p2=p1->next; while(p1->next!=NULL) { while(p2->next!=NULL) { if(p1->getxuehao()<p2->getxuehao()) exchange(p1,p2); p2=p2->next; } p1=p1->next; } p2=head; while(p2->next!=NULL) { if(p2->getxuehao()<p1->getxuehao()) exchange(p1,p2); p2=p2->next; } cout<<"按总分排列如下:"<<endl; Output(head); return(head); cout<<"回主页请按0。"<<endl; } student *student::Modify(studebt *head) { long getxuehao(); char t='y'; student *p1,*p2; cout<<"欢迎进入信息修改系统!"<<endl; while(t=='y') { cout<<"请输出要修改的学生的学号:"; cin>>xuehao; p1=head; while(getxuehao()!=p1->getxuehao()&&p1->next!=NULL) {p2=p1;p1=p1->next;} if(getxuehao()==p1->getxuehao()) cout<<"该学生的信息为:"<<"高数:"<<p1->getshuoxue()<<"\t" <<"英语:"<<p1->getyingyu()<<"\t"<<"程序:"<<p1->getchengxu()<<"\t" <<"大学体育:"<<p1->getPE()<<"\t"<<"数字逻辑 :"<<p1->getsuzhi()<<"\t"<<"近代史:"<<p1->getqidaishi()<<endl; cout<<"是否修改(y/n)?"; cin>>t; cout<<"学号 "<<" "<<"姓名 "<<" "<<"性别 "<<" " <<"高数 "<<" "<<"英语 "<<" "<<"