gets warning on gcc

This is a discussion on gets warning on gcc within the C Programming forums, part of the General Programming Boards category; Sorry if this has been asked, my program works correctly however gcc gives this warning message after compilation. /tmp/ccCSFstj.o(.text+0x29): In ...

  1. #1
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    gets warning on gcc

    Sorry if this has been asked, my program works correctly however gcc gives this warning message after compilation.

    /tmp/ccCSFstj.o(.text+0x29): In function `main':
    : warning: the `gets' function is dangerous and should not be used.
    My book only says gets should be used with caution because it can go over the allocated buffers is there anything else I should know?

  2. #2
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    There is nothing else to know except, don't use it. Ever.
    Use fgets()

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    If you have something as:
    Code:
    gets(buffer);
    Replace it with:
    Code:
    fgets(buffer, sizeof buffer, stdin);
    Remember this and never ever use gets() again.

  4. #4
    and the hat of int overfl Salem's Avatar
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    > My book only says gets should be used with caution
    Burn it.

    Or perhaps the book meant to say the book itself should be used with caution.

    Title and author please.

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    Sams Teach Yourself C in 21 Days - Bradley Jones and Peter Aitken. the book has been much better than my other which is just too old, and teaches a few bad habits.

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    Ah, Sams. Gawd bless the cheeky monkeys. Always one to dare to do the impossible (Claim to teach complicated programming languages in the space of between a day and 3 weeks, which most of its customers seem to think is a guarantee)...

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    and the hat of int overfl Salem's Avatar
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    That seems to be the wrong edition of the book I have Sams Teach yourself C in 21day Ed6. not the VC++ one. I dont expect to learn C in 21days that wasnt the aim of me buying the book its impossible to learn any language in 21days most are too big.

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    No one is blaming you for reading/buying it. Lots of people still do get these kinds of books not knowing how bad they really are.

  10. #10
    Jez
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    Yes, imagine my dissapointment when I didn't manage to learn Linux in 10 minutes!

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