The syntax of a switch directive option is $ followed by the directive letter, followed by a plus (+) or a minus (-).

编译器指令的语法是“$”后紧跟一个指令字符，再跟一个“-”或“+”。

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The syntax of a switch directive option is $ followed by the directive letter, followed by a plus (+) or a minus (-).

编译器指令的语法是“$”后紧跟一个指令字符，再跟一个“-”或“+”。

youdao