language design question

This is a discussion on language design question within the C++ Programming forums, part of the General Programming Boards category; Is there a reason why you have to use strcmp for C-style strings as opposed to ==? Also, why isn't ...

  1. #1
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    language design question

    Is there a reason why you have to use strcmp for C-style strings as opposed to ==?

    Also, why isn't there a function/operator to compare arrays in the standard?

    I'm sure there are good reasons why the language was designed this way, but just wondering why?

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    Code Goddess Prelude's Avatar
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    >Is there a reason why you have to use strcmp for C-style strings as opposed to ==?
    You can't overload operators for built in types. And because C-style strings are arrays, they decay to pointers when used in an expression. Thus, using == for both string comparison and pointer comparison would be ambiguous. You could come up with rules such as "== means string comparison with the arrays are of type char *", but that would hurt a lot of low level code that treats objects as strings of char. So the reason is that it would cause more trouble than it's worth.

    >Also, why isn't there a function/operator to compare arrays in the standard?
    There is, memcmp.
    Last edited by Prelude; 04-12-2004 at 09:54 AM.
    My best code is written with the delete key.

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    Thanks.

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