Adding elements to array?

This is a discussion on Adding elements to array? within the C++ Programming forums, part of the General Programming Boards category; If my main has the following code Code: int main(void){ Resort R[100] = { {1267.45, 3, "Barcelo Marina Palace", "Varadero", ...

  1. #1
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    Adding elements to array?

    If my main has the following code

    Code:
    int main(void){
      Resort R[100] = {
                       {1267.45, 3, "Barcelo Marina Palace", "Varadero", "Cuba", "(416) 234-2345"},
                       {2159.99, 21, "Iberostar", "Varadero", "Cuba", "(416) 234-2346"},
                       {2400.26, 415, "Golden Crown Paradise Spa", "Cancun", "Mexico", "(416) 234-2444"},
                       {2899.54, 64, "Secrets Excellence All Suites Resort", "Punta Cana", "Domincan Republic", "(416) 234-2347"},
                       {1849.64, 51, "Melia Cayo Coco", "Cayo Coco", "Cuba", "(416) 234-2347"},
                       {1889.84, 15, "Aventura Spa Palace", "Mayan Riviera", "Mexico", "(416) 254-5547"},
                       {3849.04, 45, "El Dorado Seaside Suites", "Mayan Riviera", "Mexico", "(416) 254-2527"}
      };
    
      cio_start();
      ResortBrowser 
        rb(R, 7);
      rb.run();
      cio_stop();
    };
    Later on in my program how can I do the following

    R[7] = {0,0,"","","",""};

    ?

    How might I be able to remove records in that array too?

  2. #2
    semi-colon generator ChaosEngine's Avatar
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    if you want to add and remove elements you should use a std::list
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  3. #3
    ZuK
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    Quote Originally Posted by INFERNO2K
    Later on in my program how can I do the following

    R[7] = {0,0,"","","",""};
    You can't. This syntax is only valid for initialisation. This is an assignement.
    What you could do is to initialize a temporary and copy.
    Code:
    Resort tmp = { 0,0,"","","","" };
    R[7] = tmp;

  4. #4
    Frequently Quite Prolix dwks's Avatar
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    Code:
    int main(void) {
        /* ... */
    };
    You don't need that semicolon, and you should have a return 0.

    You can dynamically allocate an array, or use a list, as suggested.
    dwk

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  5. #5
    Rabble Rouser Slacker's Avatar
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    >how can I do the following
    >R[7] = {0,0,"","","",""};
    Set up a constructor for your Resort class that takes those arguments and then you can do this:
    Code:
    R[7] = Resort ( 0, 0, "", "", "", "" );
    And if you're lazy like me, you'll use those values as the default arguments so that you can then do this:
    Code:
    R[7] = Resort();
    >and you should have a return 0
    You can, but it's not a requirement. C++ returns 0 from main implicitly if you fall off the end. Of course, that's only on modern compilers. If you're using a compiler that was shipped before the standard, it's hit or miss whether not returning 0 is undefined behavior or not. That's why it's a good idea to keep up to date. At least then you have some solid rules to fall back on and complain about to the vendor when it still doesn't work.

    Cheers!

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