Thread: strpos() function in c?

  1. #1
    Registered User
    Join Date
    Mar 2008

    Smile strpos() function in c?

    is there any function out there in C to know the position of a string in another string? i mean, like a strpos() function from PHP? if any code out there is available, id really appreciate that!

  2. #2
    C++ Witch laserlight's Avatar
    Join Date
    Oct 2003
    The function is strstr().
    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
    Mar 2008
    i mean, that function should return the position (probably an array index) of the string inside the bigger string?

  4. #4
    Kernel hacker
    Join Date
    Jul 2007
    Farncombe, Surrey, England
    so something like this:
    int strpos(char *haystack, char *needle)
       char *p = strstr(haystack, needle);
       if (p)
          return p - haystack;
       return -1;   // Not found = -1.
    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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