static int Digit_Sum ( int copy ) {
  int d = 0 ;
  while ( copy > 0 ) {
    d += copy % 10 ;
    copy /= 10 ;
  }
  return d ;
}

static int Digit_Sum ( int copy ) { int d = 0 ; while ( copy > 0 ) { d += copy % 10 ; copy /= 10 ; } return d ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (while_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) body: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal))))) (return_statement (identifier))))