Thread: basic question to Arrays

  1. #1
    Registered User
    Join Date
    Dec 2004

    basic question to Arrays

    I have a basic question to the use of Arrays (I have been searching the net for the answer without success, so now I try here...)

    Somewhere in my code I declare two arrays:

    char TagID[16];
    char tempID[16];

    Then I want to copy the CONTENT of the 2nd array into the 1st one.
    Im not sure, but I believe that
    will just make tempID refer to the same array as TagID,without copying the content.

    Is there any predefined method I can use?

  2. #2
    and the hat of int overfl Salem's Avatar
    Join Date
    Aug 2001
    The edge of the known universe
    Well for strings (char arrays containing a \0 to mark the end of the string), you use the strcpy() call.
    For arrays of any other type, use memcpy() or a loop to copy each index yourself
    for ( i = 0 ; i < N ; i++ ) b[i] = a[i];
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.

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