Count words in a string

This is a discussion on Count words in a string within the C Programming forums, part of the General Programming Boards category; Hello, I'm looking for a way to count a specific word in a string, here's an example of what I've ...

  1. #1
    Registered User
    Join Date
    Oct 2011
    Posts
    3

    Count words in a string

    Hello,

    I'm looking for a way to count a specific word in a string, here's an example of what I've written

    Code:
    char TextString[]="hello this is a test string, used used used to count specific words"; 
    char *StringToSearch[3]={"this","a", "used"};
     int this_count=0, a_count=0, used_count=0;
    So I want to put in a loop and look for these words, I was thinking of using strstr function, but that just looks the strings once.

    Do you have a solution?

  2. #2
    Gawking at stupidity
    Join Date
    Jul 2004
    Location
    Oregon, USA
    Posts
    3,167
    Have a moving pointer so you can search the rest of the string after you find a match. Something like:
    Code:
    char *str, *match;
    int count = 0;
    for(str = TextString;str;str = match == null ? match : match + strlen(StringToSearch[index]))
      if((match = strstr(str, StringToSearch[index])))
        count++;
    If you understand what you're doing, you're not learning anything.

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