C - Function that returns a random line from a file

This is a discussion on C - Function that returns a random line from a file within the Linux Programming forums, part of the Platform Specific Boards category; I'm a beginner in C and I need a function or implementation that returns a random line from a file ...

  1. #1
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    C - Function that returns a random line from a file

    I'm a beginner in C and I need a function or implementation that returns a random line from a file .

  2. #2
    spurious conceit MK27's Avatar
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    Read the entire file into an array of strings, then shuffle the array:

    SourceForge.net: Randomizing an array - cpwiki

    Finally, use rand() to pick a line from the shuffled array.
    C programming resources:
    GNU C Function and Macro Index -- glibc reference manual
    The C Book -- nice online learner guide
    Current ISO draft standard
    CCAN -- new CPAN like open source library repository
    3 (different) GNU debugger tutorials: #1 -- #2 -- #3
    cpwiki -- our wiki on sourceforge

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