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  1. #include <stdio.h>
  2. #include <string.h>
  3.  
  4. char * mystrtok(char *, char *);
  5.  
  6. int main () 
  7. {
  8.    char str[] = "one";//Yellow fox jumps over the lazy dog";
  9.    char *delim = " ";
  10.    char *token;
  11.  
  12.    /* get the first token */
  13.    token = mystrtok(str, delim);
  14.  
  15.    /* iterate through other tokens */
  16.    while(token) 
  17.    {
  18.       printf( "\n%s", token );
  19.       token = mystrtok(NULL, delim);
  20.    }
  21.  
  22.    return 0;
  23. }
  24.  
  25. char * mystrtok(char * src, char * delim)
  26. {
  27.     static char * mystr = 0; 
  28.     char * pos;
  29.  
  30.     if(src)
  31.     { /*The function was called for the first time: set the static variable and return first token*/
  32.         mystr = src;
  33.         if(pos = strstr(mystr, delim))
  34.         {
  35.             *pos = '\0';
  36.             mystr = ++pos;
  37.             return src;
  38.         }
  39.     /*This part of the code is executed when the last token is reached.
  40.     Return it and set static pointer to zero to finish it off*/
  41.         src = mystr;
  42.         mystr = 0;
  43.         return src;
  44.     }
  45.     else 
  46.     { /*Function is called second and consecutive times. Reuse the logic by calling itself with substituted first parameter*/
  47.         return (mystr ? mystrtok(mystr, delim) : 0);
  48.     }
  49. }
Success #stdin #stdout 0.01s 5284KB
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https://ideone.com/LEgtXw
language:
C++14 (gcc 8.3)
created:
22 days ago
visibility:
public

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