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"# If 0/# if 1... # endif" function, 1. Let's talk about the role of "# if 0/# if 1... # endif" first. You have mentioned a little bit above, but you have not mentioned any key points. We know that the C standard does not provide single-line style

1. Let's talk about the role of "# If 0/# If 1... # endif" first. You have mentioned a little bit above, but you have not mentioned any key points. We know that the C standard does not provide single-line style annotations such as "//" in C ++, but

I. The role of "#if 0/#if 1 ... #endif" 1 code is defined in a number of debug version codes, this time the code is completely ignored by the compiler. If you want code to take effect, just change #if 0 to #if 1. 2 #if 0 There is also an important

if (0== ' abc ') Why would the IF (0== ' abc ') be represented as true? Principle of seeking advice ------Solution-------------------- if (0 = = intval (' abc ')) weak type, the latter will be converted to the previous type, then the comparison

This article mainly introduces Verilog if (0), if (1) to Verilog syntax correction function. Verilog syntax is too simple, has always been our criticism of the place, want to achieve a function sometimes you have to knock on a large section of the

What is the effect of this sentence? The condition is always false, used to skip some code snippets, to skip the code between #if 0 and #endif at compile time, which causes #if 0---#endif之间的语句不会被编译, which is a precompiled statement. When commenting

# If 0 ......... # endif can be used to block large sections of Code . However, you must note this when using it. // Add By wogo at 2009-03-12 // retailmsg (1, (text ("deal with hevinterrupt @@@!!! :/R/N "); # If 0 cevents = (* pkeybdist->

There are conditional compilation directives in the C language, which are common:#define Defining macros#undef to cancel a defined macro#if if the given condition is true, compile the following code#ifdef If the macro is already defined, compile the

Transferred from: http://www.cppblog.com/Joe/archive/2011/05/24/147036.aspx When commenting out chunks of code, using "#if 0" is better than using "/**/", because a comment with "/**/" to block the commented out code has nested "/**/", which leads

1 DOCTYPE HTML>2 HTML>3 Head>4 Metahttp-equiv= "Content-type"content= "text/html; charset=utf-8">5 title>Untitled Documenttitle>6 Script>7 vara=0;8 9 if(a) {Ten Alert ('I really do.') One } A Script> - Head> - the Body> - Body> -

Officials say @ @ROWCOUNT will be cleared by the following statements 0The original text reads as follows:Statements such as use, SET , deallocate cursor, CLOSE CURSOR, BEGIN TRANSACTION, or COMMIT TRANSACTION Rese T the ROWCOUNT value to 0.But it

When you comment out a large piece of code, it is better to use "# If 0" than to use, because the comments with "/**/" larger segments should prevent nested "/**/" in the commented-out code "/**/", this will cause the commented-out code area to be

When comment out a large partCode"# If 0" is better, because the comments with "/**/" larger segments should prevent nested "/**/" in the commented-out code "/**/", this will cause the commented-out code area to be out of the scope you want. This is

The problem status is as follows:When we import the data in the text into the excel file, you will find that the previous 0 values in the figure below disappear, as shown in the following figure.Solution:Click "get external data" on the "data" tab

If we use 0... to look at the world, it must be filled with various classes. Each person inherits the same base class in the deepest layer, while the derived differs greatly. Some people are very lazy, and all the memory is allocated directly,

$num = 0;if($num == 'hello'){ echo $num; // echo 0} Reply content: $num = 0;if($num == 'hello'){ echo $num; // echo 0} Check the official website: PHP Type comparison table Specific reasons, there are also instructions Update 2015-12-10

CentOS6.7 enhanced system optimization script #! /Bin/bash # Author wangqd # Description: this is a centos6.7 optimization script # Processname: upgrade the system, streamline services, install basic configurations, record bash execution time,

Build a PHP-based www server to install MySQL #!/bin/bashmount |grep "/dev/sr0"if [ "$?" != 0 ];then mount /dev/sr0 /mediafi[ "$?" != 0 ]&& echo "fail to mount ! exit " && exit yum -y install gcc-c++ ncurses-devel perl-devel rpm -q gcc-c++

struct#if 0#includeusing namespace Std;main () {//define struct type struct books {char title[20]; Char author[15]; int pages; float price; } ; Declare struct variable struct books zbk={"VC + +", "Xc", 295,35.5}; Books WBK;

Linux Daemon Authoring Guide守护进程（Daemon）是运行在后台的一种特殊进程。它独立于控制终端并且周期性地执行某种任务或等待处理某些发生的事件。 守护进程是一种很有用的进 程。Linux的大多数服务器就是用守护进程实现的。比如，Internet服务器inetd，Web服务器 httpd等。同时，守护进程完成许多系统任