Oracle Solaris Studio 12.2:C 用户指南

E.1.4.1 (5.2.1) The members of the source and execution character sets, except as explicitly specified in the Standard(除非标准中明确指定,否则为源代码字符集和执行字符集的成员):

这两个字符集都与 ASCII 字符集相同,并有特定于语言环境的扩展。