fileoperations.cpp

#include "fileoperations.h"
#include <iostream>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
                  /****************
                  Nurefşan Sarıkaya
                  ****************/
using namespace std;

void Dizi::ekle(Tel_Kayit *ykptr){
     strcpy(k[kayitsayisi].ad,ykptr->ad);
     strcpy(k[kayitsayisi].telno,ykptr->telno);
     fseek(teldefteri, 0, SEEK_END);
     fwrite(&k[kayitsayisi], sizeof(Tel_Kayit), 1, teldefteri);
     kayitsayisi++;
     listele(); /*Rehbere yeni kayıt ekler eklemez rehber listesini ekrana alfabetik sıraya göre basar,
                  kayıt_listele() fonksiyonunu daha fonksiyonel hale getirmek için devre dışı
                  bırakılabilir.*/
}
void Dizi::olustur(){
     kayitsayisi=0;
     dosyaadi="teldefteri.txt";
     teldefteri = fopen( dosyaadi, "r+" );
     if(!teldefteri){
                     if(!(teldefteri = fopen( dosyaadi, "w+" ))){
                                     cerr << "File can not be opened" << endl;
                                     exit(1);
                     }
     }
}
void Dizi::dosyayi_diziye_aktar(){
     Tel_Kayit alayi;
     fseek(teldefteri, 0, SEEK_SET);
     while(!feof(teldefteri)){
        fread(&alayi, sizeof (Tel_Kayit), 1, teldefteri);
        if(feof(teldefteri)) break;
        strcpy(k[kayitsayisi].ad,alayi.ad);
        strcpy(k[kayitsayisi].telno,alayi.telno);
        kayitsayisi++;
    }
}
void Dizi::kapat(){
     fclose(teldefteri);
}
void Dizi::yoket() {
     kapat();
     if (remove(dosyaadi) != 0) {
        cerr << "Error deleting file" << dosyaadi;
     }
}
int Dizi::ara(char aranacak[]){
    int i=0;
    bool tumu=false;
    int flag=0;
    if(strcmp(aranacak,"*")==0)
        tumu=true;
    for(int i=0;i<kayitsayisi;i++){
            if(!tumu && strcmp(k[i].ad,aranacak)!=0)
               continue;
               cout<<i+1<<". "<<k[i].ad<<" "<<k[i].telno<<endl;
               flag=1;            
    }
    return flag;   
}

void Dizi::guncelle(int kayitno, Tel_Kayit *ykptr){
     if(fseek(teldefteri, sizeof(Tel_Kayit)*(kayitno-1), SEEK_SET)==0)
          fwrite(ykptr, sizeof(Tel_Kayit), 1, teldefteri);
     }
     
void Dizi::dosyayi_duzenle(){
     yoket();
     teldefteri = fopen( dosyaadi, "r+" );
     if(!teldefteri){
                     if(!(teldefteri = fopen( dosyaadi, "w+" ))){
                                     cerr << "File can not be opened" << endl;
                                     exit(1);
                     }
     }
     fseek(teldefteri, 0, SEEK_SET);
     // Bos kayitlari atlayarak dosyaya yaz
     for(int i=0; i<kayitsayisi; i++) {
           if (strncmp(k[i].ad, "", strlen(k[i].ad)) != 0) {
                 fwrite(&k[i], sizeof(Tel_Kayit), 1, teldefteri);
            }
     }
     kayitsayisi=0;
     dosyayi_diziye_aktar();
}
     
void Dizi::sil(int kayitno){
     Tel_Kayit temp;
     strcpy(temp.ad, "");
     strcpy(temp.telno, "");
     int indisno;
     indisno=kayitno-1;
     k[indisno] = temp;
     dosyayi_duzenle();
}

void Dizi::listele(){
     Tel_Kayit temp;
     int i, j;
     for (i=1; i<kayitsayisi; i++)
     {
         for (j=0; j<kayitsayisi-i; j++)
         {
             if(strcmp(k[j].ad,k[j+1].ad)>=0)
             {
                       temp = k[j];
                       k[j] = k[j+1];
                       k[j+1] = temp;
             }
         }
     }
     for(i=0;i<kayitsayisi;i++)
             cout<<i+1<<". "<<k[i].ad<<" "<<k[i].telno<<endl;   
     dosyayi_duzenle();
     getchar();
}

fileoperations.h

#ifndef DOSYAISLEMLERI_H
#define DOSYAISLEMLERI_H
#include <stdio.h>
#include "record.h"
#define MAXKAYIT 100
struct Dizi{
       char *dosyaadi;
       FILE *teldefteri;
       Tel_Kayit k[MAXKAYIT];
       void olustur();
       void ekle(Tel_Kayit *);
       int ara(char []);
       void sil(int kayitno);
       void guncelle(int kayitno, Tel_Kayit *);
       void listele();
       int kayitsayisi;
       void kapat();
       void yoket();
       void dosyayi_duzenle();
       void dosyayi_diziye_aktar();
};
#endif

phone_prog.cpp

#include <iostream>
#include <stdlib.h>
#include <iomanip>
#include <stdio.h>
#include <ctype.h>
#include "fileoperations.h"
using namespace std;
Dizi defter;
void menu_yazdir();
bool islem_yap(char);
void kayit_ara();
void kayit_ekle();
void kayit_sil();
void kayit_guncelle();
void kayit_listele();
int main(){
    defter.olustur();
    defter.dosyayi_diziye_aktar();
    bool bitir = false;
    char secim;
    while (!bitir) {
          menu_yazdir();
          cin >> secim;
          bitir = islem_yap(secim);
    }
    defter.kapat();
    return EXIT_SUCCESS;
}
void menu_yazdir(){
     system("cls");
     cout << endl << endl;
     cout << "Phone Book Application - Nurefsan Sarikaya" << endl;
     cout << "Choose an option" << endl;
     cout << "A: Search Record" << endl;
     cout << "E: Add Record" << endl;
     cout << "G: Update Record" << endl;
     cout << "S: Delete Record" << endl;
     cout << "L: Listele" << endl;
     cout << "C: Exit" << endl;
     cout << endl;
     cout << "Enter your option {A, E, G, S, L, C} : ";
}
bool islem_yap(char secim){
     bool sonlandir=false;
     switch (secim) {
            case 'A': case 'a':
                 kayit_ara();
                 break;
            case 'E': case 'e':
                 kayit_ekle();
                 break;
            case 'G': case 'g':
                 kayit_guncelle();
                 break;
            case 'S': case 's':
                 kayit_sil();
                 break;
            case 'L': case 'l':
                 kayit_listele();
                 break;
            case 'C': case 'c':
                 cout << "Are you sure that you want to terminate the program? (E/H):";
                 cin >> secim;
                 if(secim=='E' || secim=='e')
                               sonlandir=true;
                 break;
            default:
                    cout << "Error: You have made an invalid choice" << endl;
                    cout << "Try again {A, E, G, S, C} :" ;
                    cin >> secim;
                    sonlandir = islem_yap(secim);
                    break;
}
return sonlandir;
}
void kayit_ara(){
     char ad[AD_UZUNLUK];
     cout << "Please enter the name of the person you want to search (press '*' for listing all):" << endl;
     cin.ignore(1000, '\n');
     cin.getline(ad,AD_UZUNLUK);
     if(defter.ara(ad)==0){
         cout << "Record can not be found" << endl;
     }
     getchar();
};
void kayit_ekle(){
     Tel_Kayit yenikayit;
     cout << "Please enter the information of the person you want to save " << endl;
     cout << "Name : " ;
     cin.ignore(1000, '\n');
     cin.getline(yenikayit.ad,AD_UZUNLUK);
     cout << "Phone number :";
     cin >> setw(TELNO_UZUNLUK) >> yenikayit.telno;
     defter.ekle(&yenikayit);
     cout << "Record has been added" << endl;
     getchar();
};
void kayit_sil(){
     char ad[AD_UZUNLUK];
     int secim;
     cout << "Please enter the name of the person you want to delete (press '*' for listing all):" << endl;
     cin.ignore(1000, '\n');
     cin.getline(ad,AD_UZUNLUK);
     int kisisayisi=defter.ara(ad);
     if(kisisayisi==0){
         cout << "Record can not be found" << endl;
     }
     else {
          if (kisisayisi==1){
             cout << "Record has been found." << endl;
             cout << "Please enter the index of the record if you want to delete this contact (Press -1 to exit without deletion): " ;
          }
          else
              cout << "Please enter the index of the record that you want to delete (Press -1 to exit without deletion): " ;
              cin >> secim;
              if(secim==-1) return;
              defter.sil(secim);
              cout << "Record has been deleted" <<endl;
     }
     getchar();
};
void kayit_guncelle(){
     char ad[AD_UZUNLUK];
     int secim;
     cout << "Please enter the name of the person you want to update (press '*' for listing all):" << endl;
     cin.ignore(1000, '\n');
     cin.getline(ad,AD_UZUNLUK);
     int kisisayisi=defter.ara(ad);
     if(kisisayisi==0){
         cout << "Record can not be found" << endl;
     }
     else {
          if (kisisayisi==1){
                             cout << "Record has been found." << endl;
                             cout << "Please enter the index of the record if you want to update this contact (Press -1 to exit without updating) " ;
          }
          else
              cout << "Please enter the index of the record that you want to update (Press -1 to exit without updating): " ;
          cin >> secim;
          if(secim==-1) return;
          Tel_Kayit yenikayit;
          cout << "Please enter the up-to-date information" << endl;
          cout << "Name : " ;
          cin.ignore(1000, '\n');
          cin.getline(yenikayit.ad,AD_UZUNLUK);
          cout << "Phone number :";
          cin >> setw(TELNO_UZUNLUK) >> yenikayit.telno;
          defter.guncelle(secim,&yenikayit);
          cout << "Record has been updated successfully" <<endl;
     }
     getchar();
};
void kayit_listele(){     
     defter.listele();
     getchar();
}

record.h

#define AD_UZUNLUK 30
#define TELNO_UZUNLUK 15
struct Tel_Kayit{
char ad[AD_UZUNLUK];
char telno[TELNO_UZUNLUK];
};