C“左操作数必须为l值”的错误解析字符串

I am faced with the need to pull out the information in a string of the format "blah.bleh.bloh" in ANSI C. Normally I would use strok() to accomplish this, but since I am getting this string via strtok, and strtok is not thread-safe, I cannot use this option.I am faced with the need to pull out the inform