NORETURNVAL1

Message        The function "<name>" has an implicit return type of
               int, but no value is given in this return statement.

Description    A function that has an implicit return type of int
               contains a return statement that is missing a return
               value.  Therefore, the returned value will be
               undefined.  This might not have been what you
               intended.

User Action    Supply a return value for the return statement or
               define the function with a void return type.