static int value ( char x ) {
  return ( int ) ( x - 'a' ) ;
}

static int value ( char x ) { return ( int ) ( x - ' a ' ) ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (return_statement (cast_expression type: (integral_type) value: (parenthesized_expression (binary_expression left: (identifier) right: (character_literal)))))))