3.24 Example: unirchr

   /*  exrchr.c - unirchr sample.  Find the last occurrence of a character.
   */
    
   #include <nunicode.h> 
   #include <assert.h> 
   
   void main(void) 
   { 
      punicode puni = L"bananas"; 
      punicode ptr; 
      ptr = unirchr(puni, ’a’);         /* Returns ptr to the last ’a’ */ 
      assert(unicmp(ptr, L"as") == 0); 
      ptr = unichr(puni, ’Z’);         /* If not found, return NULL. */ 
      assert (ptr == NULL);             
   }