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The Declaration tells the compiler some information to assist the compiler in syntax analysis and avoid compiler errors. The definition is to tell the compiler to generate some code that will be used by the connector. That is, the Declaration is for
When there is too much code in your code, it is especially inconvenient to read the code, and you need to use a newline character "\". Be aware of two points when using line breaks:
The 1.c compiler is based on ";" To determine if it is a statement,
1 OverviewUsed preprocessing commands starting. For example, include the command # include and macro definition command # define. In the source program, these commands are placed outside the function, and are generally placed before the source file.
Meaning of cpu usage in linux top Command, linuxtop
Meaning of cpu usage in linux top Command[Respect for original articles from: http://www.iteye.com/topic/1110848]CPU usage of 0.3% us user space1.0% sy CPU usage in kernel space0.0% percentage of
Source: http://blog.sina.com.cn/s/blog_62a151be0100x9rn.htmlFourth chapter basic Skills-Special symbolsThe quickest way to learn to write script is to watch someone else's script file. However, although this method is practical, it is often "less
Macro definition ' DefineRepresents a string with a specified identifier (that is, the name), which is in its general form:' Define identifier (macro name) string (macro content)such as: ' Define signal stringIts function is to specify the
I. RTS and CTS in the RS232 standardrts,cts------Request Send/clear send, for half-double hours of transceiver switching, belongs to the auxiliary flow control signal. Half-duplex means to say that when the hair is not received, when the collection
Batch definition: As the name suggests, a batch file is a series of commands that are set up in a certain order as an executable text file with the extension bat or cmd. These commands are collectively referred to as batch commands.
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What are the commands in the batch file?
For the time being, the commands in the batch file can be understood as the DOS command, and will be explained later. batch Processing, as its name implies, is a pile of things heap together for
Precompilation is the first step in the entire compilation process and is the result of the g++-e option output.
This step deals with the macros in the source file/header file, which are commonly used in the following categories: file contains:
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