Thread: substract character from string?

  1. #1
    Registered User
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    Sep 2002
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    15

    Question substract character from string?

    Is there a function to substract certain charakters from a string?

    My string contains masses of ';' between various characters that I want to process.

    Thanx.

  2. #2
    I lurk
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    Aug 2002
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    1,361
    So you want everything in the string besides the ';'?
    Sounds like a job for strtok. Google found me this: http://www.opengroup.org/onlinepubs/...sh/strtok.html

  3. #3
    S Sang-drax's Avatar
    Join Date
    May 2002
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    Göteborg, Sweden
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    Here's a program :

    Code:
    #include <string>
    #include <iostream>
    using std::string;
    
    string strremove(const string& str, char rm)
    {
      string strnew;
      for (string::size_type p = 0;p < str.length(); ++p)
        if (str[p] != rm)
           strnew += str[p];
      return strnew; 
    }
    
    int main()
    {
       string foo = ";;;;sang-;;;drax;;";
       std::cout << strremove(foo,';');
    }
    Last edited by Sang-drax : Tomorrow at 02:21 AM. Reason: Time travelling

  4. #4
    Registered User
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    I already tried strtok. It had Problems returning tokens like ' - + / '. Any Idea, why?

    Code:
    lkv_Pointer = strtok (lkv_String, ";");
    while (lkv_Pointer != NULL)
    {
    	cout << lkv_Pointer << endl;
    	lkv_Pointer = strtok (NULL, ";");
    }
    My lkv_String looks something like this:
    Code:
    ;;;;;;;;;;;;-20;;;;;;+60;;;;;;;;-30;;;;;;;;

  5. #5
    Registered User
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    Sep 2002
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    Sorry! Ignore my last post - found mistake.
    Thanks for all replies!

  6. #6
    Just because ygfperson's Avatar
    Join Date
    Jan 2002
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    you're using string classes, right? if you search google i think there's a list of member functions for that, some which may help you here.

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