单项选择题
下列说法正确的是:(单选)
Which of the following statements is correct? (There is only one correct answer)
A.空串就是空白串“Empty string” is blank string.
B.串只可以采用顺序存储,不可以采用链式存储 String only can be stored in sequential method and cannot be stored in linked method.
C.空串是任意字符串的子串 Empty string is a substring of arbitrary string.
D.在C++标准中,char S[M]最多能表示长度为M的字符串 In C ++ standards, char S[M] can represent up to a string of length M.