title: C: Losing content of char** after end of function
body: <p>I have a problem I can't solve. I split a string in substrings and put these substrings in an array. Everything goes fine until the search function ends. the strtok function makes perfect substrings and then everything is nicely putten in the array but when the function ends the array loses all his content. I've tried a lot of different things but nothing seems to work. I want the words array to keep his content when the search function ends and returns to main.</p>
  
  <pre><code>int main(void)
  {
      char** words=NULL;
      char argument[26] = "just+an+example";
  
      search(argument, words);
  }
  
  search(char* argument, char** words)
  {
      char* p = strtok (argument, "+");
      int n_spaces = 0;
  
      while (p) 
      {
          words = realloc(words, sizeof(char*)* ++n_spaces);
  
          if (words == NULL)
              exit(-1); // memory allocation failed
  
          words[n_spaces-1] = p;
          p = strtok(NULL, "+");
      }
  
      // realloc one extra element for the last NULL 
      words = realloc(words, sizeof(char*)* (n_spaces+1));
      words[n_spaces] = 0;
  }
  </code></pre>