mdw.cpp

本软件是一个教务系统

//---------------------------------------------------------------------------

#pragma hdrstop

//---------------------------------------------------------------------------

#pragma argsused
//---------------------------------------------------------------------------

#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <string.h>
struct AllProject
{
    char name[15];
    int  xuefen;
    int  num;
    int  max;
    struct AllProject *pnext;
};
struct StdPass
{
    char sID[9];
    char sPass[17];
    int xuefen;
    int num;
    struct StdPass *pnext;
    struct StdProMes *snext;
};
struct StdProMes
{
    char name[11];
    int xuefen;
    struct StdProMes *pnext;
};
void TeacherLand(struct StdPass **shead,struct AllProject **ahead);
void CreatProject(struct AllProject **ahead);
struct AllProject *CreatP();
int InputP(struct AllProject * p);
void DeleteProject(struct AllProject **ahead);
void AddProject(struct AllProject **ahead);
void AddStd(struct StdPass **shead);
struct StdPass * CreatStd();
int InputStd(struct StdPass *p);
void Student(struct StdPass **shead,struct AllProject **ahead);
void StudentLand(struct StdPass **shead,struct AllProject **ahead,struct StdPass *p);
void ChangePassword(struct StdPass *p);
void LookMessage(struct AllProject **ahead);
void ShowProjectMessage(struct AllProject *p);
void LookUseMessage(struct StdPass *p);
void XuanKe(struct StdPass **shead,struct AllProject **ahead,struct StdPass *p);
void LookList(struct StdPass **shead);
void freeAllLinker(struct AllProject *h);
void freeStdLinker(struct StdPass *h);
void SaveAllProject(struct AllProject *h);
struct AllProject *ReadAllProject();
struct StdPass * ReadStd();
FILE *OpenFile(char *mode);
void SaveStd(struct StdPass *h);
void Teacher(struct StdPass **shead,struct AllProject **ahead);
int main()
{
    char ch;
    struct StdPass *shead=NULL;
    struct AllProject *ahead=NULL;
    while(1)
    {
      clrscr();
      printf("This is a System!\n");
      printf("1 to land teacher .\n");
      printf("2 to land student . \n");
//      printf("3 to save project message .\n");
//      printf("4 to save student message .\n");
      printf("0 to quit \n");
      ch=getchar();
      switch(ch)
      {
        case '1':
          Teacher(&shead,&ahead);
          break;
        case '2':
          Student(&shead,&ahead);
          break;
        case '0':
          printf("\nSave project message .");
          getch();
          SaveAllProject(ahead);
          printf("\nSave studnt message .");
          getch();
          SaveStd(shead);;
          return 0;
        default :
          printf("Input it again!");
          getch();
          break;
      }
    }
    freeAllLinker(ahead);
    freeStdLinker(shead);
    return 0;
}

void Teacher(struct StdPass **shead,struct AllProject **ahead)
{

    char pass[]="t",temp2[15];
    clrscr();
    getchar();
    printf("Input password : \n ");
    gets(temp2);
    if(!strcmp(pass,temp2))  TeacherLand(shead,ahead);
    else
    {
      printf("\nYou input is not right!");
      getch();
    }
}

void TeacherLand(struct StdPass **shead,struct AllProject **ahead)
{
    char ch;
    struct StdPass *stemp;
    struct AllProject *atemp;
    while(1)
    {
    clrscr();
    printf("1 to add project\n");
    printf("2 to delete project\n");
    printf("3 to add student\n");
    printf("4 to add project\n");
    printf("5 to read project message from file\n");
    printf("6 to read message from file\n");
    printf("Input other key to return... \n");
    ch=getchar();
    switch(ch)
    {
      case '1':
        freeAllLinker(*ahead);
        CreatProject(ahead);
        break;
      case '2':
        DeleteProject(ahead);
        break;
      case '3':
        AddStd(shead);
        break;
      case '4':
        AddProject(ahead);
        break;
      case '5':
        *ahead=ReadAllProject();
        break;
      case '6':
        *shead=ReadStd();
        break;
      default :
        return ;
       /* break;*/
    }
    }
}

void CreatProject(struct AllProject **ahead)
{
    struct AllProject *atemp,*p;
    if(!*ahead) *ahead=CreatP();
    else
    {
      atemp=CreatP();
      for(p=(*ahead)->pnext;p->pnext&&p;p=p->pnext);
      p->pnext=atemp->pnext;
      free(atemp);
    }
}

struct AllProject *CreatP()
{
    struct AllProject *phead,*p1,*p2;
    p1=phead=(struct AllProject *)malloc(sizeof(struct AllProject));
    while(1)
    {
      clrscr();
      p2=(struct AllProject *)malloc(sizeof(struct AllProject));
      if(!InputP(p2))
      {
        free(p2);
        break;
      }
      p1->pnext=p2;
      p1=p2;
    }
    p1->pnext=NULL;
    return phead;
}

int InputP(struct AllProject * p)
{
    printf("Input project'name (0 to quit):\n ");
    getchar();
    gets(p->name);
    if(p->name[0]=='0') return 0;
    printf("Input project'xue fen :\n");
    scanf("%d",&(p->xuefen));
    printf("Input the max student number :\n");
    scanf("%d",&(p->max));
    p->num=0;
    return 1;
}

void DeleteProject(struct AllProject **ahead)
{
    char name[11];
    struct AllProject *p=*ahead,*temp;
    clrscr();
    if(!p)
    {

      printf("You have input nothing!\n");
      getch();
      return ;
    }
    else if(!p->pnext)
    {

      printf("You have input nothing!\n");
      getch();
      return ;
    }
    printf("Which project you want to delete?\n");
    gets(name);
    while(1)
    {
      if(!strcmp(p->pnext->name,name)||p->pnext)
      break;
      p=p->pnext;
    }
    if(!(p->pnext))
    {
      printf("no exit!"); getch(); return ;
    }
    temp=p->pnext;
    p->pnext=p->pnext->pnext;
    free(temp);
}

void AddProject(struct AllProject **ahead)
{

    CreatProject(ahead);

}

void AddStd(struct StdPass **shead)
{
    struct StdPass *p;
    if(!*shead) *shead=CreatStd();
    else
    {
      p=CreatStd();
      *shead=p->pnext;
      free(p);
    }
}

struct StdPass * CreatStd()
{
    struct StdPass *shead,*p1,*p2 ;
    p1=shead=(struct StdPass *)malloc(sizeof(struct StdPass));
    while(1)
    {
      clrscr();
      p2=(struct StdPass *)malloc(sizeof(struct StdPass));
      if(!InputStd(p2)) { free(p2); break; }
      p1->pnext=p2;
      p1=p2;
    }
    return shead;
}

int InputStd(struct StdPass *p)
{
    getchar();
    printf("Input student'ID:(0 to quit)\n");

    gets(p->sID);
    if(p->sID[0]=='0') return 0;
    printf("Input student'PassWord:\n");
    gets(p->sPass);
    p->xuefen=0;
    p->snext=NULL;
    p->num=0;
    return 1;
}

void Student(struct StdPass **shead,struct AllProject **ahead)
{
    char ID[10],PW[19];
    struct StdPass *p;
    clrscr();
    getchar();
    printf("Input you ID:\n");
    gets(ID);
    printf("Input you PassWard:\n");
    gets(PW);
    if(!*shead) { printf("You ID no exit!\n");  getch(); return; }
    for(p=(*shead)->pnext;p;p=p->pnext)
      if(!strcmp(p->sID,ID))
        break;

    if(!p) { printf("You ID no exit!");getch(); return; }
    if(!strcmp(p->sPass,PW)) StudentLand(shead,ahead,p);
    else
    { printf("PassWord wrong!"); getch(); }
}

void StudentLand(struct StdPass **shead,struct AllProject **ahead,struct StdPass *p)
{
    char ch;
    while(1)
    {
      clrscr();
      printf("1 to change PassWord\n");
      printf("2 to look ke xuan ke cheng\n");
      printf("3 to look yi yuan ke cheng \n");
      printf("4 to xuan ke\n");
      printf("5 to look xuan ke xin xi\n");
      printf("0 to return\n");
      ch=getchar();
      switch(ch)
      {
        case '1':
          ChangePassword(p);
          break;
        case '2':
          LookMessage(ahead);
          break;
        case '3':
          LookUseMessage(p);
          break;
        case '4':
          XuanKe(shead,ahead,p);
          break;
        case '5':
          LookList(shead);
          getch();
          break;
        case '0':
          return;
      }
    }
}

void ChangePassword(struct StdPass *p)
{
    char temp1[17],temp2[17];
    int i=0;
    while(1)
    {
      clrscr();
      printf("Input new password : ");
      gets(temp1);
      printf("Input it again : ");
      gets(temp2);
      if(!strcmp(temp1,temp2))
        break;
    }
    strcpy(p->sPass,temp1);
}

void LookMessage(struct AllProject **ahead)
{
    struct AllProject *p;
    if(!(*ahead)||!(*ahead)->pnext)
    {
       printf("There is no message to show!");
       getch();
       return ;
    }

    for(p=(*ahead)->pnext;p;p=p->pnext)
    {
      clrscr();
      ShowProjectMessage(p);
      getch();
    }
}

void ShowProjectMessage(struct AllProject *p)
{
    printf("Project name             : %s\n",p->name);
    printf("Project xuefen           : %d\n",p->xuefen);
    printf("The number of neng xuan  : %d \n",p->max-p->num);
}

void LookUseMessage(struct StdPass *p)
{
    struct StdProMes *sp;
    sp=p->snext;
    if(!sp) { printf("You have xuan nothing!"); getch(); return; }
    for(;sp;sp=sp->pnext)
    {
      clrscr();
      printf("Project name    : %s \n",sp->name);
      printf("Project xue fen : %d \n",sp->xuefen);
      getch();
    }
    printf("You have xuan %d ge xuefen ",p->xuefen);
    getch();
}

void XuanKe(struct StdPass **shead,struct AllProject **ahead,struct StdPass *p)
{
    char name[15];
    struct StdPass *sp;
    struct AllProject *ap;
    struct StdProMes *temp;
    ap=*ahead;

    clrscr();
    getchar();
    printf("Input you xuan ke de name : \n");
    gets(name);
    if(!ap) { printf("You Input not exit!"); getch(); return ; }
    for(;ap;ap=ap->pnext)
      if(!strcmp(ap->name,name)) break;
    if(!ap) { printf("You Input not exit!"); getch(); return ; }
    else if((ap->xuefen+p->xuefen)>=28)
      printf("You can't xuan this project because you xue fen can't > 28 !");
    else
    {
      temp=(struct StdProMes *)malloc(sizeof(struct StdProMes));
      strcpy(temp->name,ap->name);
      temp->xuefen=ap->xuefen;
      temp->pnext=p->snext;
      p->snext=temp;
      p->num++;
      p->xuefen+=temp->xuefen;
    }
}

void LookList(struct StdPass **shead)
{
    char name[15];
    struct StdPass *sp=*shead;
    struct StdProMes *p;
    clrscr();
    printf("Input you want look'project'name : ");
    gets(name);
    gets(name);
    for(sp=sp->pnext;sp;sp=sp->pnext)
      for(p=sp->snext;p;p=p->pnext)
        if(!strcmp(name,p->name))
          printf("%s\n",sp->sID);
}

void freeAllLinker(struct AllProject *h)
{
    struct AllProject *p1,*p2;
    for(p1=h;p1;p1=p2)
    {
      p2=p1->pnext;
      free(p1);
    }
}

void freeStdLinker(struct StdPass *h)
{
    struct StdPass *sp1,*sp2;
    struct StdProMes *mp1,*mp2;
    for(sp1=h;sp1;sp1=sp2)
    {
      for(mp1=sp1->snext;mp1;mp1=mp2)
      {
        mp2=mp1->pnext;
        free(mp1);
      }
      sp2=sp1->pnext;
      free(sp1);
    }
}

void SaveAllProject(struct AllProject *h)
{
    struct AllProject *p;
    FILE *fp;
    fp=OpenFile("w");
    if(!fp) { printf("Open file failed!"); getch(); return; }
    if(!h)  return ;
    for(p=h->pnext;p;p=p->pnext)
      fwrite(p,sizeof(struct AllProject),1,fp); 
    fclose(fp);
}

struct AllProject * ReadAllProject()
{
    struct AllProject *p1,*h,*p2;
    FILE *fp;
    fp=OpenFile("r");
    if(!fp) { printf("Open file failed!"); getch(); return NULL;}
    p1=h=(struct AllProject *)malloc(sizeof(struct AllProject));
    while(1)
    {
      p2=(struct AllProject *)malloc(sizeof(struct AllProject)); 
      if(fread(p2,sizeof(struct AllProject),1,fp)!=1)
      {
        free(p2);
        break;
      }
      p1->pnext=p2;
      p1=p2;
    }
    p1->pnext=NULL;
    fclose(fp);
    return h;
}

struct StdPass * ReadStd()
{
    struct StdPass *sp1,*sp2,*sh;
    struct StdProMes *mp1,*mp2;
    int i;
    FILE *fp;
    sp1=sh=(struct StdPass *)malloc(sizeof(struct StdPass));
    fp=OpenFile("r");
    if(!fp) { printf("Open file failed!"); getch(); return NULL; }
    while(1)
    {
      sp2=(struct StdPass *)malloc(sizeof(struct StdPass));
      if(fread(sp2,sizeof(struct StdPass),1,fp)!=1) break;
      printf("%s\n",sp2->sID);
      
      for(i=0;i<sp2->num;i++)
      {
        mp2=(struct StdProMes *)malloc(sizeof(struct StdProMes));
        if(fread(mp2,sizeof(struct StdProMes),1,fp)!=1)
        {
          free(mp2);
          break;
        }
        if(i==0) { sp2->snext=mp2; mp1=mp2; continue ;}
        mp1->pnext=mp2;
        mp1=mp2;
      }
      mp1->pnext=NULL;
      if(!i) sp2->snext=NULL;
      sp1->pnext=sp2;
      sp1=sp2;
    }
    sp1->pnext=NULL;
    fclose(fp);
    getch();
    return sh;
}

FILE *OpenFile(char *mode)
{
    char route[19];
    FILE *fp;
    getchar();
    clrscr();
    printf("Which file you want to read?\n");
    gets(route);
    fp=fopen(route,mode);
    return fp;
}

void SaveStd(struct StdPass *h)
{
   struct StdPass *sp;
   struct StdProMes *mp;
   FILE *fp;
   fp=OpenFile("w");
   if(!fp) { printf("open file failed !"); getch(); return; }
   if(!h) return;
   for(sp=h->pnext;sp;sp=sp->pnext)
   {
     fwrite(sp,sizeof(struct StdPass),1,fp);
     for(mp=sp->snext;mp;mp=mp->pnext)
       fwrite(mp,sizeof(struct StdProMes),1,fp);
   }
   fclose(fp);
}