static int area_fun ( int side ) {
  int area = side * side ;
  return area ;
}

static int area_fun ( int side ) { int area = side * side ; return area ; }
(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: (binary_expression left: (identifier) right: (identifier)))) (return_statement (identifier))))