C # function parameter transfer-out and ref applications

1. Similarities Between out and ref reference parameters: both pass parameters to the function through reference.

2.The difference between the out parameter and the ref parameter is that the parameter is passed through the ref reference. The parameter must be initialized and cannot be initialized in the function that calls it.

3.Multiple parameters are referenced by the out clause to return multiple values. This allows the method to return the required values at will.

4.If one method uses ref to reference a parameter and the other method uses out to reference the parameter, the functions with the same method name cannot be overloaded; otherwise, a compilation error occurs.

"Cannot define overloaded methods that differ only on ref and out"

5.The ref parameter is used to change the reference type, because the reference type is passed as the ref parameter and the object will be changed.

6.You can use ref and out to pass the array. When using ref to pass the array, you must Initialize an array in the main function.

You can specify an array as a null value or initialize it into a different array.

To assign a value to an array.