写撇号签署writeln函数 - Pascal

Question

如何使用该writeln函数在Pascal中打印撇号？

例:

writeln('My brother's book');

因为s book超出"写入"功能而无法工作,因此编译器返回错误:

Fatal: Syntax error, ")" expected but "identifier S" found
Fatal: Compilation aborted

Answer 1

根据Free Pascal Reference:单引号字符可以通过键入两次嵌入字符串中:

writeln('By brother''s book');