AVR-Chat

Hi, I have problems with the implementation of "swicht"
this is the code:

swicht (data_temp) {

   case TIME_NON_VALID:
       // some code...
   break;

   case TIME_ZERO:
       // some code...
   break;

   }


this is the error from GCC:


test_rmt.c:139: warning: implicit declaration of function `swicht'