xuanke4.c

C语言学生选课系统程序

        }
  }
    printf("    Current semester is %d!\n",stu->semester);
    printf("    %d courses pass!\n",cournum);
    printf("    %d courses not pass!\n",key-cournum);
    printf("    %d course select!\n",selnum);
    printf("    Get %.0f credit hour.\n",getvalue);
    printf("    Average score is %.2f!\n",(allscore/allvalue));
    printf("    Press any key to continue......");
    getch();
    clrscr();
    goto  STUPART;
  /*显示所有学生*/ALLSTU:
        /*将所有简单学生信息写入allstu数组*/
   clrscr();
   TeacherScr2();
   fp=fopen("allstudent","r");
   if(fp==NULL)
   {
     printf("File open error!\n");
     fclose(fp);
     getch();
     clrscr();
     goto STUPART;
   }
   key=0;
   while(!feof(fp))
   {
     fread(allstu[key],sizeof(struct Stu),1,fp);
     key++;
   }
   fclose(fp);
   printf("The list of all student:\n");
   printf("  num     name               studynum\n");
   for(i=0;i<key-1;i++)
   {
      printf("   %-2d     %-20s%s\n",i+1,allstu[i]->name,allstu[i]->num);
   }
   printf("Press any key to continue!\n");
   getch();
   clrscr();
   goto STUPART;
            SPECIALPASS:/*特殊操作*********************************/
    clrscr();
   TeacherScr2();
   printf("Please input student studynumber(press 5 back,press 6 exist):\n");
   scanf("%s",a);
  if(a[0]=='5')
  {
      clrscr();
   goto  STUPART;
  }
  else if(a[0]=='6') goto END;
  strcpy(av[1],a);
  if((fp=fopen(av[1],"r"))==NULL)
  {
    printf("Sorry,no account!");
    getch();
    clrscr();
    goto STUPART;
  }
  else
  {
    fread(stu,sizeof(struct Student),1,fp);
    ReadInfo();
    fclose(fp);
  }
  SPECIAL:
   clrscr();
   TeacherScr3();
   printf("    Please input operation number:");
   scanf("%d",&key);
   switch(key)
   {
     case 1:goto SPESCORE;/*特定科目输入学生成绩*/
     case 2:goto SPESEMESTER; /*使学生进入特定学期*/
     case 3:goto SPESELECT;/*为学生选择特定课程*/
     case 4:goto SPECOURSE;/*使学生有权利选特定课程*/
     case 5:clrscr(); goto  STUPART;
     case 6:goto END;
     default: printf("Input error!\n");
              printf("Press any key to continue......\n");
              getch();
              clrscr();
              goto  SPECIAL;
   }
   /*特定科目输入学生成绩*/SPESCORE:
   clrscr();
   TeacherScr3();
   printf("##############                GIVE SPECIAL SCORE                 ##############\n");
   for(i=0;i<26;i++)
   {
     printf("*%2d  %-28s *",i+1,all[i].name);
     if((i%2)==1)
       printf("\n");
   }
   printf("\n");
   printf("Please input scourse number:");
   scanf("%d",&i);
   if(i>=1&&i<=26)
   {
     printf("Please input score:");
     scanf("%d",&all[i-1].score);
     if(all[i-1].score>=0&&all[i-1].score<=100)
     {
        if(all[i-1].score>=60&&all[i-1].score<=100)
           {
             all[i-1].flag=3;
             printf("Give score success!\n");
           }
        else if(all[i-1].score>=0&&all[i-1].score<60)
           {
             all[i-1].flag=1;
             printf("Give score success!\n");
           }
        WriteInfo();
        strcpy(av[1],a);
        if((fp=fopen(av[1],"w"))==NULL)
        {
          printf("Open file error!\n");
          getch();
          clrscr();
          goto SPECIAL;
        }
        else  fwrite(stu,sizeof(struct Student),1,fp);
        fclose(fp);
    }
    else/*分数不在0和100之间*/
        printf("Score error!Please input number between 0 and 100.\n");
     printf("Press any key to continue......\n(Press 'B' to back special operation section)\n");
      back=getch();
      if(back=='b'||back=='B')
       {
         goto SPECIAL;
       }
      else
     {
       goto SPESCORE;
     }
   }
  else/*i不再1和26之间*/
   {
      printf("Scourse number error!\n");
      printf("Press any key to continue......\n(Press 'B' to back special operation section)\n");
      back=getch();
      if(back=='b'||back=='B')
       {
         goto SPECIAL;
       }
      else
     {
       goto SPESCORE;
     }
   }
   /*使学生进入特定学期*/SPESEMESTER:
   clrscr();
   TeacherScr3();
   printf("##############                  CHANGE SEMESTER                  ##############\n");
   printf("Current semester is %d.\n",stu->semester);
   printf("Change into which semester:");
   scanf("%d",&stu->semester);
   printf("Semester change success!\n");
   WriteInfo();
   strcpy(av[1],a);
   if((fp=fopen(av[1],"w"))==NULL)
   {
     printf("Open file error!\n");
     getch();
     clrscr();
     goto SPECIAL;
   }
   else  fwrite(stu,sizeof(struct Student),1,fp);
   fclose(fp);
   printf("Press any key to continue!");
   getch();
   goto SPECIAL;
   /*为学生选择特定课程*/SPESELECT:
   clrscr();
   TeacherScr3();
   printf("##############               SELECT SPECIAL COURSE               ##############\n");
   cournum=-1;
   for(i=0;i<26;i++)
   {
     if(all[i].flag<2)
     {
        cournum++;
        printf("*%2d  %-28s *",i+1,all[i].name);
        if((cournum%2)==1)
       printf("\n    ");
     }
   }
   printf("\n    ");
   printf("Please input course number:");
   scanf("%d",&i);
   if(i>=1&&i<=26)
   {
     if(all[i-1].flag<1)
       all[i-1].flag=1;
     Select(i-1);
   }
   else
     {
        printf("Course number error!");
     }
     printf("Press any key to continue......\n(Press 'B' to back special operation section)\n");
     back=getch();
     if(back=='b'||back=='B')
       {
         WriteInfo();
         strcpy(av[1],a);
         if((fp=fopen(av[1],"w"))==NULL)
          {
            printf("Open file error!");
            getch();
            clrscr();
            goto SPECIAL;
          }
        else  fwrite(stu,sizeof(struct Student),1,fp);
        fclose(fp);
        clrscr();
        goto SPECIAL;
       }
     else
      {
        clrscr();
        goto  SPESELECT;
      }
   /*使学生有权利选特定课程*/SPECOURSE:
   clrscr();
   TeacherScr3();
   printf("##############               COURSE COULD SELECT                 ##############\n");
   cournum=-1;
   for(i=0;i<26;i++)
   {
     if(all[i].flag<1)
     {
        cournum++;
        printf("*%2d  %-28s *",i+1,all[i].name);
        if((cournum%2)==1)
       printf("\n");
     }
   }
   printf("\n");
   printf("Please input scourse number to let student could select:");
   scanf("%d",&i);
   if(i>=1&&i<=26)
   {
     switch(all[i-1].flag)
     {
       case -1:
       case 0:
       case 1:all[i-1].flag=1;printf("Succeed!\n");break;
       case 2:printf("Error!Have selectde the course!\n");break;
       case 3:printf("Error!Have finish the course!\n");break;
       default:printf("Course flag error!");
     }
   }
   else
     {
        printf("Course number error!");
     }
   printf("Press any key to continue......\n(Press 'B' to back special operation section)\n");
     back=getch();
     if(back=='b'||back=='B')
       {
         WriteInfo();
         strcpy(av[1],a);
         if((fp=fopen(av[1],"w"))==NULL)
          {
            printf("Open file error!");
            getch();
            clrscr();
            goto SPECIAL;
          }
        else
        {
          fwrite(stu,sizeof(struct Student),1,fp);
          fclose(fp);
          goto SPECIAL;
        }
       }
     else/*back不为'B'时*/
      {
        goto  SPECOURSE;
      }
/*修改密码*/PASSWORD:
  if((fp=fopen("password","w+"))==NULL)
    {
      printf("\nSorry can't find password file!\n");
      getch();
      clrscr();
      goto TEACHER;
    }
  RESET:   printf("\nPlease input new password:\n");
   for(i=0;i<6;i++)
   {
       pass1[i]=getch();
       printf("*");
   }
   pass1[i]='\0';
   printf("\nPlease input new password again:\n");
   for(i=0;i<6;i++)
   {
       pass2[i]=getch();
       printf("*");
   }
   pass2[i]='\0';
   if(strcmp(pass1,pass2)==0)
     {
       fputs(pass1,fp);
       printf("\nPassword reset!\n");
     }
   else
     {
       printf("\nPassword error!");
       printf("Press any key to continue......\n");
       getch();
       clrscr();
       TeacherScr();
       goto RESET;
     }
   fclose(fp);
   printf("Press any key to continue......\n");
   getch();
   clrscr();
   goto TEACHER;
/*************************************教师界面结束**********************************/
STUDENTPASS:/*学生登录界面*/
  clrscr();
  StartScr();
  printf("Please input your studynumber:");
  scanf("%s",a);
  strcpy(av[1],a);
  if((fp=fopen(av[1],"r"))==NULL)
  {
    printf("Sorry,no account!");
    printf("Press any key to continue......");
    getch();
    clrscr();
    goto STUDENTPASS;
  }
  else  fread(stu,sizeof(struct Student),1,fp);
  ReadInfo();
  fclose(fp);
STUDENT:
   clrscr();
   StudentScr();
   printf("    Please input operation number:");
   scanf("%d",&key);
   switch(key)
   {
     case 1:goto SELECT;
     case 2:goto SCORE;
     case 3:goto VALUE;
     case 4:goto SELECTED;
     case 5:goto BACK;
     case 6:goto END;
     default: printf("Input error!\n");
     printf("Press any key to continue......\n");
     getch();
     clrscr();
     goto  STUDENT;
   }
/*选择课程*/ SELECT:
   clrscr();
   StudentScr();
   printf("##############                   SELECT COURSE                   ##############\n");
  selnum=ShowCourToSelect();
  if(selnum==0)
  {
    printf("There is no course to select!\n");
    printf("Press any key to continue......\n");
    getch();
    WriteInfo();
    strcpy(av[1],a);
    if((fp=fopen(av[1],"w"))==NULL)
         {
          printf("Open file error!");
          getch();
          clrscr();
          goto STUDENT;
         }
    else  fwrite(stu,sizeof(struct Student),1,fp);
    fclose(fp);
    clrscr();
    goto STUDENT;

  }
  printf("Input the course number you want to select:");
  scanf("%d",&i);
  if(i<1||i>26)
  {
    printf("Course number input error!\n");
    printf("Press any key to continue......");
    getch();
    clrscr();
    goto SELECT;
  }
  Select(i-1);
  if(all[i-1].flag==2)
    {
     printf("Press any key to continue......\n(Press 'B' to back student first section)\n");
     back=getch();
     if(back=='b'||back=='B')
       {
         WriteInfo();
         strcpy(av[1],a);
         if((fp=fopen(av[1],"w"))==NULL)
          {
            printf("Open file error!");
            getch();
            clrscr();
            goto STUDENT;
          }
        else  fwrite(stu,sizeof(struct Student),1,fp);
        fclose(fp);
        clrscr();
        goto STUDENT;
       }
     else
      {
        clrscr();
        StudentScr();
        goto  SELECT;
      }
    }
  else
  {
     printf("Select error!\n");
     printf("Press any key to continue......\n(Press 'B' to back student first section)\n");
     back=getch();
     if(back=='b'||back=='B')
       {
          WriteInfo();
          strcpy(av[1],a);
          if((fp=fopen(av[1],"w"))==NULL)
           {
             printf("Open file error!");
             getch();
             clrscr();
             goto STUDENT;
           }
         else  fwrite(stu,sizeof(struct Student),1,fp);
         fclose(fp);
         clrscr();
         goto STUDENT;
       }
      else
     {
       clrscr();
       StudentScr();
       goto  SELECT;
    }
  }

/*成绩查询*/SCORE:
   clrscr();
   StudentScr();
   printf("##############                    INQUIRE SCORE                  ##############\n");
  getvalue=0;
  allvalue=0;
  allscore=0;
  printf("number        coursename              credit hour   character    score\n");
  for(i=0;i<26;i++)
  {
    if(all[i].score>=60)
      getvalue=getvalue+all[i].value;
    if(all[i].score!=0)
    {
      allscore=allscore+all[i].score*all[i].value;
      allvalue=allvalue+all[i].value;
      printf("  %-2d      %-30s    %d        %-10s    %d \n",i+1,all[i].name,all[i].value,all[i].character,all[i].score);
    }
  }
  if(allscore==0)
    printf("No course get score!\n");
  else
  {
    printf("You have get %.0f credit hour.\n",getvalue);
    printf("Average score is %.2f!\n",(allscore/allvalue));
  }
  printf("Press any key to continue......\n");
  getch();
  clrscr();
  goto  STUDENT;
/*学分查询*/VALUE:
  clrscr();
  StudentScr();
  getvalue=0;
  allvalue=0;
  for(i=0;i<26;i++)
  {
    if(all[i].flag==3)
      getvalue=getvalue+all[i].value;
    if(all[i].flag==2)
      allvalue=allvalue+all[i].value;
  }
  printf("You have get %.0f credit hour.\n",getvalue);
  printf("Credit hour of all selected course is %.0f.\n",allvalue);
  printf("Press any key to continue......\n");
  getch();
  clrscr();
  goto  STUDENT;
/*已选课程*/SELECTED:
  clrscr();
  StudentScr();
  allvalue=0;
  printf("##############                  SELECTED COURSES                 ##############\n");
  printf("number        coursename              semester    credit hour  character\n");
  for(i=0;i<26;i++)
  {
    if(all[i].flag==2)
    {
      allvalue=allvalue+all[i].value;
      printf("  %-2d      %-30s  %d            %d       %-10s\n",i+1,all[i].name,all[i].semester,all[i].value,all[i].character);
    }
  }
  if(allvalue==0)
    printf("No course selected!\n");
  else printf("Credit hour of all selected course is %.0f.\n",allvalue);
  printf("Press any key to continue......\n");
  getch();
  clrscr();
  goto  STUDENT;
BACK:/*返回首页*/
  clrscr();
  goto START;
END:/*退出程序*/
  exit(1);
}