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标题:学生选课系统出现多个error C2011: 'studentname' : 'struct' type redefin ...
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tianyi1993
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学生选课系统出现多个error C2011: 'studentname' : 'struct' type redefinition,求帮忙
//#include"student.h"

//这个是课程类
/*struct course        //某个学生所学的课程中的某一个
{
    char cname[20]; //课程名称
    float grade;    //课程成绩
    course *Next;   //指向下一个课程的指针
};*/
struct studentdb
{
    student stu;
    studentdb *Next;
};
struct studentname
{
    char tname[20];       //学生的名字
    float result;     //学生所得的该课程分数
    studentname *Next;
};

class subject
{
public:
    subject()
    {
        first = NULL;
        maxstudent=30;
        activestudnet=0;
    }
    float readcredit();    //得到课程的学分
    void getcredit(float a); //设置学分
    float getaverage();    //得到学生的平均成绩
    float getresult(char N[]); //查找某个学生的成绩
    void getkname(char N[]); //读出课程的名称
    void setkname(char N[]); //读入课程的名称
    studentname * retfirst()
    {
        return first;    //返回根结点
    }
    void findstudent(studentdb *P); //根据该课程的名称,寻找选这课程的学生
    int retactivestudent()
    {
        return activestudnet; //返回实际学生数
    }
    int retmaxstudent()
    {
        return 30;     //返回最多学生数30
    }
    void clractivestudnet()
    {
        activestudnet = 0;   //从文件中读出来后将实际学生数清零
    }

private:
    int maxstudent;    //最多学生数
    int activestudnet;   //实际学生数
    studentname * first;   //学生名单
    float credit;    //该课程的学分
    float averagerusult; //该课程的平均成绩
    char kname[20];    //该课程的名称
};

///////////////////////////////////////////////////////////////////////////
//学生类

#include<iostream>

struct course        //某个学生所学的课程中的某一个
{

    char cname[20]; //课程名称
    float grade;    //课程成绩
    course *Next;   //指向下一个课程的指针
};

/*struct studentname
{

    char tname[20];       //学生的名字
    float result;     //学生所得的该课程分数
    studentname *Next;
};*/

class student
{
public:
    student()
    {
        root = NULL;
        const maxcourse = 5;
        factcourse = 0;
    }
    void readname(char N[] );     //读入学生的姓名
    void getname(char N[]);       //得到学生的姓名
    void wrecourse(char N[],float score); //要据课程名写入学生课程的成绩
    float average();              //学生课程的平均成绩
    void addcourse(char N[],float g); //给学生增加一门课
    int findcourse(char N[]);     //查找是否已有此课程,如果有返回1,如果没有返回0
    int retfactcourse()
    {
        return factcourse;
    }                             //得到所学的课程数目
    course * retroot()
    {
        return root;              //利用键表将所有的课程保存起来
    }
    int retmaxcourse()
    {
        return 5;      //得到最多可学的课程数目
    }
    void clrroot()      //清零
    {
        root = NULL;
        factcourse = 0;
    }


private:
    char sname[20];        //学生的姓名
    int maxcourse;      //学生最多可以学五门课程
    int factcourse;      //学生实际所学的课程数目
    course *root;      //课程的根结点指针
};
//学生类的函数实现
#include"student.h"
void student::readname (char N[])
{
    strcpy(sname,N);
}

void student::getname(char N[])
{
    strcpy(N,sname);
}

void student::wrecourse(char N[],float score)
{
    course *p = root;
    if(p==NULL)
        return;
    if(p!=NULL)
        p = p->Next;
    while(p)
    {
        if(strcmp(p->cname,N)==0)
        p->grade = score;

        p = p->Next;
    }
}

float student::average()
{
    float aver=0.0;
    course *p = root;

    while (p)
    {
        aver = aver+p->grade;
    }

    aver = aver/factcourse;
    return aver;
}

void student::addcourse (char N[],float g)
{
    course *s = new course;
    s->Next=NULL;
    if(root == NULL)
        root = s;
    course *p = root;
    course *newcourse = new course;
    newcourse->Next = p->Next;
    p->Next=newcourse;
    strcpy(newcourse->cname,N);
    newcourse->grade = g;
    factcourse++;

}

int student::findcourse (char N[])
{
    course *p = root;
    if(root==NULL)
        return 0;
    p = p->Next;
    while(p)
    {
        if(strcmp(p->cname,N)==0)
            return 1;
        p = p->Next;
    }
    return 0;
}
//课程类的函数实现
#include"subject.h"
using namespace std;
float subject::readcredit ()
{
    return credit;
}

void subject::getcredit (float a)
{
    credit=a;
}

float subject::getaverage()
{
    float k = 0.0;
    studentname *p;
    p=first->Next;
    if(p==NULL)
    return 0;
    while(p)
    {
        k = k + p->result;
        p = p->Next ;
    }

    return k/activestudnet;
}

float subject::getresult (char N[])
{
    studentname *p;
    p = first;
    while(p)
    {
        if(strcpy(p->tname ,N)==0)
            return p->result;
        p = p->Next ;
    }
    return -1;
}

void subject::getkname (char N[])
{
    strcpy(N,kname);
}

void subject::setkname (char N[])
{
    strcpy(kname,N);
}

void subject::findstudent(studentdb *P)
{
    studentname *newcode = new studentname;
    newcode->Next=NULL;
    first = newcode;
    studentname *T = first;

    studentdb *K = P->Next;
    while(K)
    {
        course *Y = K->stu.retroot();
        if(Y ==NULL)
        {
            K = K->Next;
            continue;
        }
        if(Y!=NULL)
        Y = Y->Next;
        while(Y)
        {
            if(strcmp(Y->cname,kname)==0)
            {
                studentname *Acode = new studentname;
                char Name[20];
                K->stu.getname(Name);
                strcpy(Acode->tname,Name);
                Acode->result = Y->grade;
                Acode->Next = T->Next;
                T->Next = Acode;
                activestudnet = activestudnet + 1;
                break;
            }

            Y = Y->Next;
        }
        K = K->Next;
    }
    return ;
}
////////////////////////////////////
////////////////////////////////////////////////////////////////////////
//学生端功能函数
/*struct course        //某个学生所学的课程中的某一个
{
    char cname[20]; //课程名称
    float grade;    //课程成绩
    course *Next;   //指向下一个课程的指针
};*/
#include"subject.h"

//#include"student.h"
//#include"stufunc.h"
struct studentdb
{
    student stu;
    studentdb *Next;
};
/*struct studentname
{
    char tname[20];       //学生的名字
    float result;     //学生所得的该课程分数
    studentname *Next;
};*/
struct subjectdb
{
    subject sub;
    subjectdb *Next;
};
int menu_1_1(studentdb *P,subjectdb *X)    //学生选课
{
    system("cls");
    cout<<"\n\n\t\t\t\t学生选课操作"<<endl;//

    studentdb *q=P->Next;
    int i;
    char N[20],M[20];
    if(q!=NULL)
        cout<<"\n\n\n\t\t所有学生名单如下:\n"<<endl;
    else
    {
        cerr<<"\n\n\n\t\t对不起,暂时没有学生名单!请按任意键继续.."<<endl;
        return 1;
    }
    while(q)
    {
        q->stu.getname(N);
        cout<<"\t\t\t\t"<<N;
        cout<<endl;
        q = q->Next ;
    }

    q = P->Next;
    if(q==NULL)
    return 1;

    cout<<"\n\n\t\t 请输入学生姓名:";
    cin>>N;
    i=0;
    q=P->Next;
    while(q)
    {
        q->stu.getname(M);
        if(strcmp(N,M)==0)
        i++;
        q = q->Next;
    }
    int j=0,k=1;
    if(i==0)
    {
        cout<<"\n\n\t\t没有这个学生!! 请按任意键返回.."<<endl;
        return 1;
    }
    else if(i>1)
    {
        cout<<"\n\n\t\t共找到"<<i<<"个姓名为"<<N<<"的学生"<<endl;
        cout<<"\t\t选择第几个:";
        cin>>k;
    }
    if(k>i||k<=0)
    {
        cerr<<"\n\t\t\t输入有误!按任意键继续"<<endl;
        return 1;
    }
    q = P->Next;
    j=0;
    while(q)
    {
        q->stu.getname(M);
        if(strcmp(N,M)==0)
        j++;
        if(j==k)
        {
            if(q->stu.retfactcourse()>=q->stu.retmaxcourse())
            {
                cout<<"\n\t\t所选课程已满!按任意键继续"<<endl;
                return 1;
            }
            else
            {
                subjectdb *t=X->Next;
                char N1[20];
                system("cls");;
            if(t!=NULL)
            {
                cout<<"\n\n\n\t\t所有课程如下:"<<endl;
                cout<<"\n\t\t\t\t课程名称\t\t 学分"<<endl;
            }
            else
            {
                cerr<<"\n\n\n\t\t对不起,暂时没有课程"<<endl;
                return 1;
            }
            while(t)
            {
                t->sub.getkname(N1);
                cout<<"\t\t\t\t "<<N1<<setw(26-strlen(N1))<<t->sub.readcredit()<<endl;
                t = t->Next ;
            }
            char N2[20];
            cout<<"\n\t    输入你所要选的课程 : ";
            cin>>N2;
            t = X->Next;
            while(t)

            {
                t->sub.getkname(N1);
                if(strcmp(N1,N2)==0)
                {
                    if(q->stu.findcourse(N2)==1)
                    {
                        cout<<"\n\t\t此课程你已选过了,不能再选.按任意键继续"<<endl;
                        return 1;
                    }
                    t=X->Next;
                    char NA[20];
                    while(t)
                    {
                        t->sub.getkname(NA);
                        if(strcmp(NA,N2)==0)
                        {
                            if(t->sub.retactivestudent()>=t->sub.retmaxstudent ())
                                {
                                    cout<<"\n\t\t此课程已选满,不能选.按任意键继续"<<endl;
                                    return 1;
                                }
                        }
                        t = t->Next;
                    }
                    q->stu.addcourse(N2,0.0);
                    cout<<"\n\n\t\t选课成功!按任意键继续"<<endl;
                    return 1;
                }
                t = t->Next;
            }
            cerr<<"\n\t\t没有此课程!按任意键继续"<<endl;
        }

        return 1;
    }
    q = q->Next;
    }
    return 1;
}

int menu_1_2(studentdb *P,subjectdb *X)   //学生情况
{
    studentdb *q=P->Next;
    char N[20];
    system("cls");
    cout<<"\n\n\t\t\t\t学生情况操作"<<endl;
    int i;
    if(q!=NULL)
    {
        cout<<"\n\n\n\t\t所有学生选课信息如下:\n"<<endl<<endl;
        cout<<"\t\t 姓名\t\t\t选课情况\n"<<endl;
    }
    else
    {
        cerr<<"\n\n\n\t\t对不起,暂时没有学生名单!!请按任意键继续.."<<endl;
        return 1;
    }
    while(q)
    {
        q->stu.getname(N);
        cout<<"\t\t "<<N<<setw(25-strlen(N))<<" 已选 "<<q->stu.retfactcourse()<<" 门课 "<<endl;
        q = q->Next ;
    }
    char M[20];
    cout<<"\n\t\t输入要查看的学生姓名:";
    cin>>M;
    i=0;
    q=P->Next;
    while(q)
    {
        q->stu.getname(N);
        if(strcmp(N,M)==0)
        i++;
        q = q->Next;
    }
    int j=0,k=1;
    if(i==0)
    {
        cout<<"\n\t\t\t没找到这个学生!!请按任意键继续.."<<endl;
        return 1;
    }
    else if(i>1)
    {

        cout<<"\n\t\t共找到"<<i<<"个姓名为"<<M<<"的学生"<<endl;
        cout<<"\t\t选择第几个:";
        cin>>k;
    }
    if(k>i||k<=0)
    {

        cerr<<"\n\t\t\t输入有误!按任意键继续.."<<endl;

        return 1;
    }
    q = P->Next;
    j=0;
    q=P->Next;

    while(q)
    {
        q->stu.getname(N);
        if(strcmp(N,M)==0)
        j++;
        if(j==k)
        {
            system("cls");;
            course *T=q->stu.retroot();
            if(T==NULL)
            {
                cout<<"\n\n\n\t\t\t"<<N<<"同学你还未选课! 请按任意键继续.."<<endl;
                return 1;
            }
            if (T!=NULL)
            T = T->Next;
            cout<<"\n\n\n\t\t"<<N<<"同学你已选"<<q->stu.retfactcourse()<<"门课,具体如下\n\n"<<endl;
            cout<<"\t\t\t课程名称\t\t成绩\n"<<endl;
            while(T)
            {

                cout<<"\t\t\t "<<T->cname<<setw(25-strlen(T->cname))<<T->grade<<endl;
                T = T->Next;
            }
            j=0;
        }
        q = q->Next;
    }
    cout<<"\n\t\t请按任意键继续..."<<endl;
    return 1;
}


int menu_1_3(subjectdb *P)   //选课情况
{
    subjectdb *q=P->Next;
    char N[20];
    system("cls");
    cout<<"\n\n\t\t\t\t选课情况操作"<<endl;

    if(q!=NULL)
    {
        cout<<"\n\n\n\t\t所有选课情况如下:\n"<<endl;
        cout<<"\n\t\t\t课程名称\t\t选课人数\n"<<endl;
    }
    else
    {
        cerr<<"\n\n\n\t\t对不起,暂时没有课程!!请按任意键继续.."<<endl;
        return 1;
    }
    while(q)
    {
        q->sub.getkname(N);
        cout<<"\t\t\t"<<N<<setw(28-strlen(N))<<q->sub.retactivestudent()<<endl;
        q = q->Next ;
    }
    cout<<"\n\t\t请按任意键继续.."<<endl;
    return 1;
}


int menu_1_4(studentdb *X,subjectdb *P)   //退出系统
{
    menu_2_9(X,P);
    tuichu();
    return 0;
}
//这个是菜单函数
#include"student.h"
#include"subject.h"

struct studentname
{
char tname[20];       //学生的名字
float result;     //学生所得的该课程分数
studentname *Next;
};

///////////////////////////////////////////////////////////////////////////////////
void tuichu()
{
    system("cls");
    cout<<"再见\n\n"<<endl;
    cout<<"\n\t "
    <<"\n\t"<<endl;
    cout<<"\t\t\n"
    <<"\t\t        
    <<"\t\t      
    <<"\t\t      
    <<"\t\t    \n\n\n"<<endl;
    getch();
    exit(-1);
}
//////////////////////////////////////////////////////////////////////////////////
//总菜单
char menu()
{
    int k=0;
    char a[3],c,i;
    system("cls");
    cout<<endl<<endl;
    cout<<"\t\t\t\tC++课程设计课题\n\n"<<endl;
    cout<<"\t\t********************************************\n"
    <<"\t\t*                                          *\n"
    <<"\t\t*                选修课小系统              *\n"
    <<"\t\t*                                          *\n"
    <<"\t\t*                                          *\n"
    <<"\t\t*     操作方式:                            *\n"
    <<"\t\t*               1.选修课系统学生端         *\n"
    <<"\t\t*                                          *\n"
    <<"\t\t*               2.选修课系统管理端         *\n"
    <<"\t\t*                                          *\n"
    <<"\t\t********************************************\n"<<endl;

    while(1)
    {
        cout<<"\n\t\t请选择登入方式: ";
        cin>>a;
        if(strlen(a)==1)
        {
            for(i='1';i<='2';i++)
            {
                c=i;
                if(c==a[0])
                    return c;
            }
        }
        cerr<<"\n\n\t\t\t\t输入有误!\n"<<endl;
        k++;
        if(k>2)
        {
            system("cls");
            cerr<<"\n\n\n\t\t~~提示~~:错误输入次数超过三次,你将被强制退出!!\n\n"<<endl;
            cout<<"\t\t按任意键继续"<<endl;
            getch();
            tuichu();
        }
    }
}
///////////////////////////////////////////////////////////////////////////////////
//选修课系统端操作
char custom()
{
    char A[10];
    char b;
    char i;
    int k = 0;
    system("cls");;
    cout<<"\n\n\n"
    <<"\t\t※※※※※※※※※※※※※※※※※※※※※※※※※※※\n"
    <<"\t\t※选修课系统学生端※\n"
    <<"\t\t※               ※\n"
    <<"\t\t※ 操作方式: ※\n"
    <<"\t\t※1.学生选课 ※\n"
    <<"\t\t※2.学生情况※\n"
    <<"\t\t※3.选课情况※\n"
    <<"\t\t※4.退出系统※\n"
    <<"\t\t※              ※\n"
    <<"\t\t※※※※※※※※※※※※※※※※※※※※※※※※※※※\n"<<endl;

    while(1)
    {
        cout<<"\t\t\t请选择操作方式: ";
        cin>>A;
        if(strlen(A)==1)
        {
            for(i='1';i<='4';i++)
            {
                b=i;

                if(b==A[0]) return b;
            }
        }
        cerr<<"\n\t\t\t\t输入有误!\n"<<endl;
        k++;
        if(k>2)
        {   
            system("cls");
            cerr<<"\n\n\t\t\t~~提示~~:错误输入超过三次!你将被强制退出!!\n"<<endl;
            cout<<"\t\t按任意键继续"<<endl;
            getch();
            tuichu();
        }
    }
}


char server()
{
    char A[10];
    char b;
    char i;
    int k = 0;
    system("cls");;
    cout<<"\n\n\n"
    <<"\t\t※※※※※※※※※※※※※※※※※※※※※※※※※※※\n"
    <<"\t\t※                                                  ※\n"
    <<"\t\t※                  选修课系统管理端                ※\n"
    <<"\t\t※                                                  ※\n"
    <<"\t\t※      操作方式:                                   ※\n"
    <<"\t\t※               1.增加学生      2.增加课程         ※\n"
    <<"\t\t※               3.删除学生      4.删除课程         ※\n"
    <<"\t\t※               5.填写成绩      6.更改学分         ※\n"
    <<"\t\t※               7.学生情况      8.选课情况         ※\n"
    <<"\t\t※               9.保存数据      0.退出系统         ※\n"
    <<"\t\t※                                                  ※\n"
    <<"\t\t※※※※※※※※※※※※※※※※※※※※※※※※※※※\n"<<endl;
    while(1)
    {
        cout<<"\t\t 请选择操作方式: ";
        cin>>A;
        if(strlen(A)==1)
        {
            for(i='0';i<='9';i++)
            {
                b=i;
                if(b==A[0])
                return b;
            }
        }
        cerr<<"\n\t\t\t\t输入有误!\n"<<endl;;
        k++;
        if(k>2)
        {
            cerr<<"错误输入超过三次!\n";
            exit(-1);
        }
    }
}
//////////////////////////////////////////////////////////////////////////////////
//密码检查
void password()
{
    int k=0,i;
    char A[]="liu657521";
    char B[10];
    char a;
    system("cls");
    for(i=0;i<8;i++)
    cout<<endl;


    while(k<=2)
    {
        printf("\t\t\t请输入管理员密码:");
        i=0;
        while(1)
        {
            a=getch();
            if(a==13)
            break;
            B[i]=a;
            i++;
            printf("*");
        }
        B[i]='\0';
        if(strcmp(A,B)==0)
            return;
        else
        {
            k++;
            cerr<<"\n\n\t\t\t密码输入错误!请重新输入!\n"<<endl;
        }
        if(k>=3)
        {
            system("cls");
            cerr<<"\n\n\t\t\t输入错误密码超过三次!请按任意键退出.."<<endl;
            getch();
            tuichu();
        }
    }
}

///////////////////////////////////////////////////////////////////////

struct subjectdb
{
    subject sub;
    subjectdb *Next;
};
struct studentdb
{
    student stu;
    studentdb *Next;
};
int menu_2_7(studentdb *P);
int menu_2_9(studentdb *Y,subjectdb *P);
int menu_2_8(subjectdb *P);

/////////////////////////////////////////////////////////////////////////////////////
//管理端功能函数
int menu_2_1(studentdb *P)   //增加学生
{
    char N[20];
    system("cls");
    cout<<"\n\n\t\t\t\t增加学生操作\n"<<endl;
    cout<<"\n\n\t\t请输入学生姓名:";
    cin>>N;
    cout<<endl<<"\t\t增加学生操作成功,按任意键继续"<<endl;
    studentdb *newnode = new studentdb;
    newnode->Next = P->Next ;
    newnode->stu.readname(N);
    P->Next = newnode ;
    return 1;
}


int menu_2_2(subjectdb *P)   //增加课程
{

    float k;
    char N[20],M[20];
    system("cls");;
    cout<<"\n\n\t\t\t\t增加课程操作\n"<<endl;
    cout<<"\n\n\t\t 请输入课程名称:";
    cin>>N;
    cout<<endl;
    subjectdb *q = P->Next;
    while(q)
    {
        q->sub.getkname(M);
        if(strcmp(N,M)==0)
        {
            cout<<"\n\t\t此课程已经存在,按任意键继续"<<endl;
            return 1;
        }
        q = q->Next;
    }
    cout<<"\t\t输入此课程的学分:";
    cin>>k;
    cout<<"\n\t\t增加课程操作成功,按任意键继续"<<endl;
    subjectdb *newnode = new subjectdb;
    newnode->Next = P->Next ;
    newnode->sub.setkname(N);
    newnode->sub.getcredit(k);
    P->Next = newnode ;
    return 1;
}


int menu_2_3(studentdb *P)   //删除学生
{
    system("cls");
    cout<<"\n\n\t\t\t\t删除学生操作"<<endl;
    menu_2_7(P);
    studentdb *q = P->Next;
    if(q==NULL)
        return 1;
    int i;
    char N[20],M[20];
    cout<<"\n\t请输入要删除的学生姓名 :";
    cin>>N;
    i=0;
    while(q)
    {
        q->stu.getname(M);
        if(strcmp(N,M)==0)
            i++;
        q = q->Next;
    }
    int j=0,k=1;
    if(i==0)
    {

        cerr<<"\n\t\t没有这个学生!!请按任意键继续.."<<endl;
        return 1;
    }
    else if(i>1)
    {
        cout<<"\n\t\t共找到"<<i<<"个姓名为"<<N<<"的学生"<<endl;
        cout<<"\n\t\t要删除第几个:";
        cin>>k;
    }
    if(k>i||k<=0)
        return 1;
    q = P->Next;
    studentdb *R = P;
    j=0;
    while(q)
    {
        q->stu.getname(M);

        if(strcmp(N,M)==0)
            j++;
        if(j==k)
        {
            R->Next = q->Next;
            free(q);
            cout<<"\n\t\t删除学生操作成功,按任意键继续.."<<endl;
            return 1;
        }
        q = q->Next;
        R = R->Next;
    }
    return 1;
}


int menu_2_4(subjectdb *P)   //删除课程
{
    subjectdb *q=P->Next;
    char N[20];
    system("cls");;
    cout<<"\n\n\t\t\t\t删除课程操作"<<endl;
    if(q!=NULL)
        cout<<"\n\n\n\t\t所有课程如下:\n"<<endl;
    else
    {
        cerr<<"\n\n\n\t\t对不起,暂时没有课程!!请按任意键继续.."<<endl;
        return 1;
    }
    while(q)
    {
        q->sub.getkname(N);
        cout<<"\t\t\t\t"<<N<<endl;
        q = q->Next ;
    }
    q = P->Next;
    subjectdb *R = P;
    if(q==NULL)
        return 1;
    char M[20];
    cout<<"\n\t    请输入要删除的课程 :";
    cin>>M;
    while(q)
    {
        q->sub.getkname(N);
        if(strcmp(N,M)==0)
        {
            R->Next = q->Next;
            free(q);
            cout<<"\n\t\t删除课程操作成功,按任意键继续"<<endl;
            return 1;
        }
        q = q->Next;
        R = R->Next;
    }

    cerr<<"\n\t\t没有此课程!!\t请按任意键继续.."<<endl;
    return 1;
}


int menu_2_5(studentdb *X,subjectdb *P)   //填写成绩
{

    subjectdb *q=P->Next;
    char M[20],N[20],NA[20];
    float score;
    system("cls");
    cout<<"\n\n\t\t\t\t 填写成绩操作\n"<<endl;
    if(q!=NULL)
        cout<<"\n\t\t\t课程名称\t\t选课人数\n"<<endl;
    else
    {
        cout<<"\n\n\n\t\t对不起,暂时没有任何选修课程。请按任意键继续.."<<endl;
        return 1;
    }
    while(q)
    {
        q->sub.getkname(N);
        cout<<"\t\t\t"<<N<<setw(28-strlen(N))<<q->sub.retactivestudent()<<endl;
        q = q->Next ;
    }

    q = P->Next;
    cout<<"\n\t请输入课程名称 :";
    cin>>M;
    while(q)
    {
        q->sub.getkname(N);
        studentname *K = q->sub.retfirst();
        if(K!=NULL)
        K = K->Next;
        if(strcmp(N,M)==0)
        {
            system("cls");;
            if(K!=NULL)
            {
                cout<<"\n\n\t\t请填写选修"<<M<<"的学生成绩\n"<<endl;
                cout<<"\n\t\t\t姓名\t\t成绩"<<endl;
            }
            if(K==NULL)
            cerr<<"\n\t\t\t无任何信息!!请按任意键继续.."<<endl;
            while(K)
            {

                cout<<"\n\t\t\t"<<K->tname<<"\t\t ";

                cin>>score;

                studentdb *XX = X->Next;
                while(XX)
                {
                    XX->stu.getname(NA);
                    if(strcmp(NA,K->tname)==0)
                    XX->stu.wrecourse(M,score);
                    XX = XX->Next;
                }
                K = K->Next;
            }
        if(K==NULL)
        cout<<"\n\t\t填写成绩完毕!!请按任意键继续.."<<endl;
        return 1;
        }
        q = q->Next;
    }
    cerr<<"\n\t\t没有此课程!!请按任意键继续.."<<endl;
    return 1;
}

//更改学分
int menu_2_6(subjectdb *P)   
{
    float k;
    system("cls");
    cout<<"\n\n\n\t\t\t\t更改学分操作\n"<<endl;
    subjectdb *q = P->Next;

    char N[20],M[20];
    if(q!=NULL)
    cout<<"\n\n\n\t\t 所有课程如下:\n"<<endl;
    else
    {
        cerr<<"\n\n\n\t\t对不起,暂时没有任何可选课程。请按任意键继续.."<<endl;
        return 1;
    }
    while(q)
    {
        q->sub.getkname(N);
        cout<<"\t\t\t\t "<<N<<endl;
        q = q->Next ;
    }
    q = P->Next;
    cout<<"\n\n\n\t\t请输入要改的课程 :";
    cin>>M;
    while(q)
    {
        q->sub.getkname(N);
        if(strcmp(N,M)==0)
        {

            cout<<"\n\t\t\t原来学分为 :"<<q->sub.readcredit()<<endl;
            cout<<"\n\t\t\t现要更改为 :";
            cin>>k;
            q->sub.getcredit(k);
            cout<<"\n\t\t更改课程学分成功,按任意键继续"<<endl;
        return 1;
        }
        q = q->Next;
    }
    cerr<<"\n\t\t无此课程!!请按任意键继续.."<<endl;
    return 1;
}

//学生情况
int menu_2_7(studentdb *P)   
{
    studentdb *q=P->Next;
    char N[20];
    system("cls");
    cout<<"\n\n\n\t\t\t\t学生情况操作\n"<<endl;
    if(q!=NULL)
    cout<<"\n\n\n\t\t所有学生名单如下:\n"<<endl;
    else
    {
        cerr<<"\n\n\n\t\t对不起,暂时没有学生名单!请按任意键继续.."<<endl;
        return 1;
    }
    while(q)
    {
        q->stu.getname(N);
        cout<<"\t\t\t\t"<<N;
        cout<<endl;
        q = q->Next ;
    }
    cout<<"\n\t\t按任意键继续.."<<endl;
    return 1;
}


//选课情况
int menu_2_8(subjectdb *P)   
{

    subjectdb *q = P->Next;
    char M[20],N[20];
    system("cls");
    cout<<"\n\n\t\t\t\t选课情况操作"<<endl;

    if(q!=NULL)
    {
        cout<<"\n\n\n\t\t所有选课情况如下:\n"<<endl;
        cout<<"\n\t\t\t课程名称\t\t选课人数\n"<<endl;
    }
    else
    {
        cerr<<"\n\n\n\t\t对不起,暂时没有课程!!请按任意键继续.."<<endl;
    return 1;
    }
    while(q)
    {
        q->sub.getkname(N);
        cout<<"\t\t\t"<<N<<setw(28-strlen(N))<<q->sub.retactivestudent()<<endl;
        q = q->Next ;
    }

    q = P->Next;
    cout<<"\n\t请输入课程名称 :";
    cin>>M;
    while(q)
    {
        q->sub.getkname(N);
        studentname *K = q->sub.retfirst();

        if(K!=NULL)
            K = K->Next;
        if(strcmp(N,M)==0)
        {
            system("cls");;
            if(K==NULL)
            {
                cerr<<"\n\n\t无任何选课信息!!\t请按任意键继续.."<<endl;
                return 1;
            }
            cout<<"\n\n\n\t\t选修"<<M<<"课的学生名单如下:\n"<<endl;
            cout<<"\n\t\t\t姓名\t\t 成绩"<<endl;
            while(K)
            {
                cout<<"\n\t\t\t"<<K->tname<<setw(20-strlen(K->tname))<<K->result<<endl;
                K = K->Next;
            }
            cout<<"\n\t\t请按任意键继续.."<<endl;
            return 1;
        }
        q = q->Next;
    }

    cerr<<"\n\t\t无此课程!!\t请按任意键继续.."<<endl;

    return 1;
}


//保存数据
int menu_2_9(studentdb *Y,subjectdb *P)   
{
    studentdb *Z = Y->Next;
    subjectdb *X = P->Next;
    system("cls");;
    fstream file("subject.txt",ios::out);

    while(X)
    {
        file.write ((char *)&(X->sub),sizeof(X->sub));
        X = X->Next;
    }
    file.close();

    fstream file1("student.txt",ios::out);
    fstream file2("course.txt",ios::out);
    while(Z)
    {
        file1.write ((char *)&(Z->stu),sizeof(Z->stu));
        int time = Z->stu.retfactcourse();
        course *co = Z->stu.retroot(),*co1;
        if(co!=NULL)
        co1 = co->Next;
        while(time)
        {
            file2.write((char *)(co1),sizeof(*co1));
            co1 = co1->Next;
            time = time - 1;
        }
        Z = Z->Next;
    }
    file2.close ();
    file1.close();

    cout<<"\n\n\n\t\t\t保存数据成功!按任意键继续.."<<endl;
    return 1;
}

//退出系统
int menu_2_0()   
{
    tuichu();
    return 0;
}


这个是main函数
//////////////////main.cpp////////////
#include <string.h>
#include <stdio.h>
#include <iostream.h>
#include <stdlib.h>
#include <iomanip.h>
#include <fstream.h>
#include <conio.h>
#include"head.h"

#include"student.h"
#include"subject.h"
#include"student.h"
#include"stufunc.h"
int main()
{
    subjectdb *P = new subjectdb,*Q=P;
    P->Next = NULL;
    subject M;
    fstream file("subject.txt",ios::in);
    while(1)
    {
        file.read((char *)&M,sizeof(M));
        if(!file) break;
        Q->Next = new subjectdb;
        Q->Next ->Next = NULL;
        Q->Next ->sub = M;
        Q = Q->Next;
    }
    file.close ();

    studentdb *Y = new studentdb,*X=Y;
    Y->Next=NULL;
    student N;
    course O;
    fstream file1("student.txt",ios::in);
    fstream file2("course.txt",ios::in);
    while(1)
    {
        file1.read((char *)&N,sizeof(N));
        if(!file1) break;
        Y->Next = new studentdb;
        Y->Next ->Next = NULL;
        Y->Next ->stu = N;
        int time = N.retfactcourse();
        Y->Next->stu.clrroot ();
        while(time)
        {   
            file2.read ((char *)&O,sizeof(course));
            if(!file2) break;
            Y->Next->stu.addcourse( ,O.grade);
            time--;
        }
        Y=Y->Next;
    }
    file2.close ();
    file1.close ();
    Q=P->Next;
    while(Q)
    {
        Q->sub.clractivestudnet();
        Q->sub.findstudent(X);
        Q = Q->Next;
    }
    char c;
    char b;
    int br=1;
    b = menu();
    if(b=='1')
    {
        while(1)
        {
            c = custom();
            switch(c)
            {
                case '1':br = menu_1_1(X,P);getch();break; //学生选课
                case '2':br = menu_1_2(X,P);getch();break; //学生情况
                case '3':br = menu_1_3(P);getch(); break; //选课情况
                case '4':br = menu_1_4(X,P);        break; //退出系统
            }
            if (br == 0)
            break;
        }
    }
    if(b=='2')
    {
        password();
        while(1)
        {
            c = server();
            switch(c)
            {
                case '1':br = menu_2_1(X);getch(); break;   //增加学生
                case '2':br = menu_2_2(P);getch(); break;   //增加课程
                case '4':br = menu_2_4(P);getch(); break;   //删除课程
                case '3':br = menu_2_3(X);getch(); break;   //删除学生
                case '5':br = menu_2_5(X,P);getch();break;   //填写成绩
                case '6':br = menu_2_6(P);getch(); break;   //更改学分
                case '7':br = menu_2_7(X);getch(); break;   //学生情况
                case '8':br = menu_2_8(P);getch(); break;   //选课情况
                case '9':br = menu_2_9(X,P);getch();break;   //保存数据
                case '0':br = menu_2_0();break;              //退出系统
            }
            if (br == 0)
            break;
        }
    }
    return 0;
}
网上说的方法都试过了,怎么也调不过,请各路高手帮忙,小弟感激不尽







搜索更多相关主题的帖子: course include 系统 public 
2012-06-11 15:17
zxwangyun
Rank: 4
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得分:20 
我觉得你应该把工程源码放上来,而不是把工程中某些文件的内容复制在这里

努力改变一点点!!
2012-06-11 16:07
tianyi1993
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回复 2楼 zxwangyun
学生选课系统.rar (411.47 KB)
好的,这是源码
2012-06-11 16:28
shendade
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那个学校的,
2012-06-11 23:38
zxwangyun
Rank: 4
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学生选课系统.rar (308.38 KB)

vs2008下调试通过
我只能用一个字来形容,乱!

努力改变一点点!!
2012-06-12 15:09
tianyi1993
Rank: 1
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回复 4楼 shendade
抱歉啊,小弟是编程新手,还正在努力学习进步中,麻烦大侠把调试通过的源码发来好吗?还有大侠可否留下邮箱,以后还想大侠多多指导。我的邮箱1737227437@
2012-06-12 16:31
tianyi1993
Rank: 1
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回复 5楼 zxwangyun
额,看错了,已经发来了。。。。。。。。。。。
2012-06-12 16:33
y64100117
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学习学习

[url=http://6699.tv]最新电影[/url]
2012-06-14 23:20
快速回复:学生选课系统出现多个error C2011: 'studentname' : 'struct' type re ...
数据加载中...
 
   



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