array size

This is a discussion on array size within the C++ Programming forums, part of the General Programming Boards category; Hi all, this short paragraph of code is to get the user to enter q to quit. But why is ...

  1. #1
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    Join Date
    May 2010
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    8

    array size

    Hi all, this short paragraph of code is to get the user to enter q to quit. But why is the value of c = input_line[0] zero? What is the purpose of this line? Thanks!
    Code:
    char input_line[81];
    
              .
              .
              .
    
    
     if (file_in.eof())
                break;
            cout << "More? (Press 'Q' and ENTER to quit.)";
            cin.getline(input_line, 80);
            c = input_line[0];
            if (c == 'Q' || c == 'q')
                break;

  2. #2
    Registered User
    Join Date
    Nov 2007
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    Free Country, USA
    Posts
    105
    input_line[0] is the first character in the array. It does not refer to the array's size.

    If the value of input_line[0] is equal to "0", then your user is inputting "0".
    Hatman Approves!

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