static double u_cal ( double u , int n ) {
  double temp = u ;
  for ( int i = 1 ;
  i < n ;
  i ++ ) temp = temp * ( u - i ) ;
  return temp ;
}

static double u_cal ( double u , int n ) { double temp = u ; for ( int i = 1 ; i < n ; i ++ ) temp = temp * ( u - i ) ; return temp ; }
(method_declaration (modifiers) type: (floating_point_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (floating_point_type) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (floating_point_type) declarator: (variable_declarator name: (identifier) value: (identifier))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))))))) (return_statement (identifier))))