static int isPerfect ( int n ) {
  int sum = 1 ;
  for ( int i = 2 ;
  i * i <= n ;
  i ++ ) {
    if ( n % i == 0 ) {
      if ( i * i != n ) sum = sum + i + n / i ;
      else sum = sum + i ;
    }
  }
  if ( sum == n && n != 1 ) return n ;
  return 0 ;
}

static int isPerfect ( int n ) { int sum = 1 ; for ( int i = 2 ; i * i <= n ; i ++ ) { if ( n % i == 0 ) { if ( i * i != n ) sum = sum + i + n / i ; else sum = sum + i ; } } if ( sum == n && n != 1 ) return n ; return 0 ; }
(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))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier)) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (decimal_integer_literal))) consequence: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier))) consequence: (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (binary_expression left: (identifier) right: (identifier))))) alternative: (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (identifier))))))))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) consequence: (return_statement (identifier))) (return_statement (decimal_integer_literal))))