C Application (File Operations )

This tutorial shows us that  how to read from txt file , storing  in the array structer and searching from that array structer.For this tutorial you need to create a txt file named phonebook and write  name , surname and number like this .

Garen    Haddeler   87143232141
Ali   Emre 231241421
Name    Surname    23123124124
.....................................................

You all succed!!
mail me if you have question or suggestion
mail:g.haddeler@gmail.com


C  Codes :
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#include <stdio.h>
#include <string.h>
#include <conio.h>

// Program creates an array  structer and stores the chars that taken from phonebook.txt file .
//It has two other function that searching name and last name individually
 struct  phonebook{
  char name[16];
  char surname[21];
  char num[11];
};



int name_searching(char *FirstName, int size );

int lastname_searching(char *LastName, int size);

 struct  phonebook c[30];

 
 FILE *ptVeri;
int main(){
  int secim=0;
  char searchname[20];
int  NUM ;


 
 
  if((ptVeri=fopen("phonebook.txt","r"))==NULL){
 
  printf("\n ERROR couldnt open txt file  !!! ");
 
  }
 
 
  int i =0;
 
 while(!feof(ptVeri)){
    fscanf(ptVeri,"%s%s%s",&c[i].name, &c[i].surname,&c[i].num);
i++ ;}



  fclose(ptVeri);

  while(1){
 
  printf("Searching for First Name enter 1 \n");
printf("Searching for Last Name enter 2 \n");
printf("Exit for enter 3 \n");
 scanf("%d",&secim);

  switch (secim){
      case 1:
      printf("\nWrite first name >  (max 20 character):");
     
   scanf("%s",searchname);


    NUM = name_searching(searchname,i);
        if ( NUM == 0){ // geri bildirim:
          printf("\n NOT FOUND \n ");
        }else {
          if( NUM  > 0)
            printf("\nTotal %d search is found .\n", NUM );
          else
            printf("\n ERROR !!! ");
        }
     
        break;
      case 2:
     
     
printf("\nWrite last name >  (max 20 character):");
        scanf("%s",searchname);
       
     NUM  = lastname_searching(searchname,i);
        if ( NUM == 0){ // geri bildirim:
          printf("\n NOT FOUND ");
        }else {
          if( NUM  > 0)
            printf("\nTotal %d search is found .\n ", NUM );
          else
            printf("\n ERROR !!!");
        }
        break;
       
        case 3 : break;
    default : printf("Only enter 1-2-3"); break;
 
}
if(secim==3) break;

}

  }
       int name_searching(char *FirstName, int size ){
 

  int count=0;
 for( int d =0 ; d<size ; d++){

 if(!strcmp(FirstName, c[d].name)){
      printf("%s",c[d].name);
      printf(" %s",c[d].surname);
      printf(" %s\n",c[d].num) ;
   

     count++;
    }}


  return count;
}
       
        int lastname_searching(char *LastName, int size ){
 

 
  int count=0;

  for( int d =0 ; d<size ; d++){

 if(!strcmp(LastName, c[d].surname)){
      printf("%s",c[d].name);
      printf(" %s",c[d].surname);
      printf(" %s\n",c[d].num) ;
   

     count++;
    }}
  return count;
}
       
     
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