What are two options for writing a called method that results in altering a single value in the calling method?
What will be an ideal response?
When you need a method to alter a single value, you have two options:
* Use a return type. You can send an argument to a method that accepts a value parameter, alter the local version of the variable within the method, return the altered value, and assign the return value to the original variable back in the calling method.
* Pass by reference. You can send an argument to a method that accepts a reference parameter or an output parameter, and alter the value at the original memory location within the method.
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