if statement syntax 如果语句语法
If you want to start the event monitor only for specific applications, specify an event condition in the CREATE event monitor statement syntax shown in Figure 30.
如果希望只为特定的应用程序启动事件监视器，那么用CREATE EVENT monitor语句语法指定事件条件，见图30。
If the variable is not defined, the statement is flagged as a syntax error.
如果变量没有定义，则语句被标为有语法错误。
The simplest flow control statement is the if statement, whose basic syntax is demonstrated in the pseudocode shown in Listing 4.
最简单的流控制语句是 if 语句，它的基本语法在清单 4 中的伪代码中演示了。
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