When you call a method that has an output parameter, you must also write the keyword out before the argument.

Name: When you call a method that has an output parameter, you must also write the keyword out before the argument.
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When calling a method that has an output parameter, you must use the keyword out before the argument. This is used to indicate to the compiler that the argument is intended to be used as an output parameter in the method.

When You Call a Method That Has an Output Parameter