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pricks 2009-05-01
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学习ing。
宝_爸 2009-05-01
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#if --
#if lets you begin a conditional directive, testing a symbol or symbols to see if they evaluate to true. If they do evaluate to true, the compiler evaluates all the code between the #if and the nearest #endif directive.
叫做预编译。会影响之间的代码被编译或者不被编译。
if条件判断。这个是代码，。。。。太基本了，没办法解释了。
#if lets you begin a conditional directive, testing a symbol or symbols to see if they evaluate to true. If they do evaluate to true, the compiler evaluates all the code between the #if and the nearest #endif directive.
叫做预编译。会影响之间的代码被编译或者不被编译。
if条件判断。这个是代码，。。。。太基本了，没办法解释了。
