Thread: sscanf scanf

  1. 12-20-2010 #1
    ddimit02
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    sscanf scanf

    what is the different between scanf and sscanf
    one different that im not sure if im correct is that with sscanf you can you "\0" to find if the string has ended?
  2. 12-20-2010 #2
    laserlight
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    Quote Originally Posted by ddimit02
    what is the different between scanf and sscanf
    Well...
    Quote Originally Posted by C99 Clause 7.19.6.4 Paragraph 1
    The scanf function is equivalent to fscanf with the argument stdin interposed before the arguments to scanf.
    Quote Originally Posted by C99 Clause 7.19.6.7 Paragraph 1
    The sscanf function is equivalent to fscanf, except that input is obtained from a string (specified by the argument s) rather than from a stream. Reaching the end of the string is equivalent to encountering end-of-file for the fscanf function.
    Quote Originally Posted by Bjarne Stroustrup (2000-10-14)
    I get maybe two dozen requests for help with some sort of programming or design problem every day. Most have more sense than to send me hundreds of lines of code. If they do, I ask them to find the smallest example that exhibits the problem and send me that. Mostly, they then find the error themselves. "Finding the smallest program that demonstrates the error" is a powerful debugging tool.
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  3. 12-20-2010 #3
    quzah
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    Quote Originally Posted by ddimit02 View Post
    what is the different between scanf and sscanf
    You could always just read the man pages. Or, any text on C for that matter. In short:

    scanf - read from standard input device
    sscanf - read from a string
    fscanf - read from a file stream


    Quzah.
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