Thread: reverse string without using strrev() function

  1. #1
    Registered User
    Join Date
    Oct 2008

    reverse string without using strrev() function

    any idea to reverse string without using strrev() function in C?
    *Just only use stdio.h to complete scoure code

    Thank you for your idea ^^

  2. #2
    C++ Witch laserlight's Avatar
    Join Date
    Oct 2003
    Well, there is no strrev() function in the C standard library in the first place

    Use or replicate strlen() to find the length of the string, and then swap the corresponding nth and (length - n - 1)th chars in a loop that stops halfway through the string.
    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.
    Look up a C++ Reference and learn How To Ask Questions The Smart Way

  3. #3
    Registered User
    Join Date
    Oct 2008
    Erm,can give some example?i didn't understand what u try to explain. XD

  4. #4
    Kernel hacker
    Join Date
    Jul 2007
    Farncombe, Surrey, England
    So how much of it DO you understand. Can you read a string? Can you figure out it's length? Do you understand how to get the nth character out of a string?

    Compilers can produce warnings - make the compiler programmers happy: Use them!
    Please don't PM me for help - and no, I don't do help over instant messengers.

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