پروژه هاي برنامه نويسي

[آبجی]

اينم جواب پروژه شون :

#include <stdio.h>
#include <conio.h>
#include <iostream.h>
#include <iomanip.h>

  struct Student
  {
    int  ID;
    char FirstName[20];
    char LastName[30];
    double Mark;
  } st;
  struct Student *classA[30];

  void new_student(int st_id);
  void Print_StudentList();
  float CalcAverage();
  void Sort_Students();

  int StudentCount;
  float ClassAverage;

  void main()
  {
    clrscr();
    cout << "\Enter Student Number :";
    int i;
    cin >> StudentCount;
    for (i=1;i<=StudentCount;i++)
    {
      new_student(i);
    }
    clrscr();
    ClassAverage = CalcAverage();
    printf("\n\n\n ClassA Average : %.2f ",ClassAverage);
    Sort_Students();
    Print_StudentList();
    getch();
  }

  void new_student(int st_id)
  {
    classA[st_id] = classA[0] +  (sizeof(st) * st_id)  ;
    classA[st_id]->ID = st_id;
    cout << "\nEnter Student[" << st_id << "].LastName :";
    cin >> classA[st_id]->LastName;
    cout << "\nEnter Student[" << st_id << "].FirstName:";
    cin >> classA[st_id]->FirstName;
    cout << "\nEnter Student[" << st_id << "].Mark:";
    cin >> classA[st_id]->Mark;
  }

  void Print_StudentList()
  {
    int i;
    //.................................
    //... Save In File ................
    //.................................

    FILE *fp;
    char filename[20] = "c:\\st.txt";
    fp = fopen(filename,"w");
    if (fp!=NULL)
    {
      fprintf(fp,"\nStudent List : ");
      for (i=1;i<=StudentCount;i++)
      {
    if (classA[i]-> Mark > ClassAverage)
    fprintf(fp,"\n%d : %s %s : %.2f ",classA[i]->ID,classA[i]->FirstName,classA[i]->LastName,classA[i]->Mark);
    else
    break;
      }
      fclose(fp);
      cout << "\nList Of Students Save in File : \"" << filename << "\"\n";
    }
    else
    {
      cout << "\nError On Create File " << filename << "\n";
    }

    //.................................
    //... Preview On Screen ...........
    //.................................

    cout << "\n\nStudentList\n\n";
    for (i=1;i<=StudentCount;i++)
    {
      if (classA[i]-> Mark > ClassAverage)
    cout << "\n" << classA[i]->ID << ": " << classA[i]->FirstName << " | " << classA[i]->LastName << " | " << classA[i]->Mark;
      else
    break;
    }
    //.................................
    //.................................
    //.................................

  }

  float CalcAverage()
  {
    int i;
    float sumMarks=0;
    for (i=1;i<=StudentCount;i++)
    {
      sumMarks += classA[i]->Mark;
    }
    return (sumMarks / StudentCount);

  }

  void Sort_Students()
  {
    int i,j;
    for (i=1;i<=StudentCount;i++)
    {
      for (j=i+1;j<=StudentCount;j++)
      {
    if (classA[j]->Mark > classA[i]->Mark )
    {
      struct Student *Temp;
      Temp = classA[j];
      classA[j] = classA[i];
      classA[i] = Temp;
    }
      }
    }
  }