The work is done by hardware, and sets of instructions, called software, or computer programs.
工作是由计算机硬件和一套指令共同完成，这套指令叫作软件或叫作计算机程序。
The language of the programs that are manipulated is called the object language.
语言的程序，操纵被称为对象的语言。
All you have to include in your own programs is the so-called header file.
你们自己写的程序只需要包括，头文件就可以了。
All you have to include in your own programs is the so-called header file.
你们自己写的程序只需要包括，头文件就可以了。
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