没有外部链接的重要字符Significant Characters Without External Linkage

ANSI 3.1.2 不具有外部链接的重要字符的数量ANSI 3.1.2 The number of significant characters without external linkage

标识符对 247 个字符是有意义的。Identifiers are significant to 247 characters. 编译器不限制可以在标识符中使用的字符数;它只会忽略限制之外的任何字符。The compiler does not restrict the number of characters you can use in an identifier; it simply ignores any characters beyond the limit.

请参阅See Also

使用 extern 指定链接Using extern to Specify Linkage