Phone Book in C++
Results 1 to 4 of 4

Thread: Phone Book in C++

  1. #1
    Junior Member
    Join Date
    Dec 2003
    Posts
    5

    Phone Book in C++

    Im having trouble loading data to arrays in C++. I have to make a phone book where the first thing you do is click on a button called load and then load two files, one called names.txt the other called phonenumbers.txt, to two parallel arrays. here is what i got so far. I'm so lost, any help will do.
    [code]
    int index = 0;
    ifstream name_database;
    name_database.open("F:\\pb\\names.txt");
    name_database >> names[];
    ifstream phone_database;
    phone_database.open("F:\\pb\\phonenumbers.txt");
    phone_database >> phone_number[];
    for (index=0;index<5;index++)
    names[index] = index+1;
    [code]
    ive declared my arrays globally, im programming in windows using borland

  2. #2
    Banned
    Join Date
    Nov 2005
    Posts
    63
    Code:
      int counter = 0; // counter for array locations
      char names[10][80]; // array of 10 strings each of 79 chars, just for example, yours are global
      string line; // getting each individual line from the file
      ifstream txtfile ("names.txt"); // input stream
      if (txtfile.is_open()) // checking if the file is open
      {
        while (! txtfile.eof() ) // while the stream isn't at the end of the file
        {
          getline (txtfile, line); // getting each line individually
          names[counter] = line; // place the line retrieved from the file into the array
          counter++; // advance the counter
        }
        txtfile.close(); // close the file
      }
    now this is a rough unchecked way of putting input from a stream into an array. now just make this a function, and pass in a string or pointer with the names of the files and you can easily do both files without repeating code.

  3. #3
    Junior Member
    Join Date
    Dec 2003
    Posts
    5
    Thanks for the help, i couldnt get your code to work, i got a Lvalue required error in borland, so i modified it a bit.
    Code:
      int counter_ph = 0;  // counter for array locations
      int counter = 0;  // counter for array locations
      ifstream name_database; // input stream
      name_database.open("names.txt");
      while (! name_database.eof())   // while the stream isn't at the end of the file
      {
         name_database >> names[counter];
         counter++; // advance the counter
      }
      ifstream phone_database;    // input stream
      phone_database.open("phonenumbers.txt");
      while (! phone_database.eof() )   // while the stream isn't at the end of the file
      {
         phone_database >> phone_number[counter_ph];
         counter_ph++;  // advance the counter
      }
    what do you think csl

  4. #4
    Banned
    Join Date
    Nov 2005
    Posts
    63
    oops, sorry about that, in my code i needed a string array instead of a char array. regarding your code, why not just make the data retrieval process a function and then call it whenever necessary, passing in a filename and a pointer to the array you want the data stored in. also you have two counters, one of which is un necessary.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

 Security News

     Patches

       Security Trends

         How-To

           Buying Guides