Check if a string contains another string (substring)

This is a discussion on Check if a string contains another string (substring) within the C Programming forums, part of the General Programming Boards category; hello everyone how can i check that a string contains another string(sub string), like: if i have a string like ...

  1. #1
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    Post Check if a string contains another string (substring)

    hello everyone

    how can i check that a string contains another string(sub string), like:
    if i have a string like this:
    Code:
    GET /send.htm?Text=PAYLOAD+00500+11611
    and i want to check whether this string contains the word "PAYLOAD", and if it does do something.
    here the sub string would be "PAYLOAD".
    how can I do it?
    Last edited by Ali.B; 08-13-2009 at 04:48 AM. Reason: info added

  2. #2
    C++ Witch laserlight's Avatar
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    You can use strstr() from <string.h>.
    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

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    could you show me how, with an example code or something ?

  4. #4
    C++ Witch laserlight's Avatar
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    Yes
    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

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    wow nice ....
    thanks

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