中石化自助加油使用图:lvalue required in function push

lvalue required in function push lvalue required in fuction main是什么意思 Lvulue required in function bsort this sample is not required in cases In any undertaking required pursuant to such enforcement,是什么意思啊？ lvalue是什么意思啊？ required是什么意思？ 翻译：in this part ,you are required to write a letter according to the following instrucions given 401 Authentication Required是什么意思？？ 401 Authentication Required是什么意思