char * RLEDecompress ( const char * src )
 {
  //ЗДЕСЬ ПИСАТЬ
 }

int main ( int argc, char * argv [] )
 {
   char * res;
   assert ( ! strcmp (
     (res = RLEDecompress ( "Hello world!" )),
     "Hello world!" ));
   free ( res );
   return 0;
 }