Thread: basic question to Arrays

  1. 01-25-2005 #1
    doneirik
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    basic question to Arrays

    Hi
    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.
    I´m not sure, but I believe that
    TagID=tempID;
    will just make tempID refer to the same array as TagID,without copying the content.

    Is there any predefined method I can use?
  2. 01-25-2005 #2
    Salem
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    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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