// Soln5_5.cpp
  include <iostream>
  include <cstring>
  using std::cin;
  using std::cout;
  using std::endl;
  
  char* parse(const char* str)
  {
     static char* pStr = 0;
     static size_t len;
     static size_t start = 0;
     size_t pos;
     char* pReturn;
  
     // First time through, save the string
     if (str)
     {
        delete pStr;   // in case it was allocated
        len = strlen(str);
        pStr = new char[len+1];
        strcpy_s(pStr, len+1, str);
     }
  
     if (start >= len)
        return 0;
  
     // Walk the string from 'start' till we find a blank or the end
     for (pos = start; pStr[pos] != ' ' && pStr[pos] != '\0'; pos++);
  
     // Copy the string if we've a word to return, otherwise return NULL
     if (pos != start)
     {
        pReturn = new char[pos - start + 2];
        size_t i = 0;
        for (size_t j=start; j<pos; i++,j++)
           pReturn[i] = pStr[j];
        pReturn[i] = '\0';
        start = pos+1;
        return pReturn;
     }
     else
        return 0;
  }
  
  int main()
  {
     char s1[] = "seventy-one fruit balls, please Doris";
     cout << "string is '" << s1 << "'\n\nParsing...\n";
     char* p = parse(s1);
  
     while (p)
     {
        cout << p << endl;
        p = parse(0);
     }
  
     return 0;
  }