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Standard routines and I/O
These topics discuss text and file
I/O and summarize standard library routines. Many of the procedures and
functions listed here are defined in the System unit, which is
implicitly compiled with every application. Others are built into the compiler
but are treated as if they were in the System unit.
Some standard routines are in
units such as SysUtils, which must be listed in a uses clause to
make them available in programs. You cannot, however, list System in a uses
clause, nor should you modify the System unit or try to rebuild it
explicitly.
Handling null-terminated
strings
See also
Unit reference and the uses clause
译文
标准例程和I/O
本章的主题讨论了文本和文件输入/输出（I/O）以及对相关标准库例程的概述。这里列出的许多过程和函数定义于System单元，该单元被隐含地编译到每个应用程序。其他由编译器内建的例程也被视为在System单元中定义。
一些标准例程位于如SysUtils的单元中，这些单元必需列于uses子句中才能使之在程序中是可用的。然而，不能将System单元列于uses子句中，也不应该修改System单元或者对其进行显示地重建（rebuild）。