C # section 21st method declaration and invocation

The content of this section:

1: Why should there be a way

2: Declaration and use of methods

3: Method params incoming receive array

4: Value passing and reference passing

5: Output parameter out

1: Why should there be a way

2: Declaration and use of methods

Declaring an instance:

3: Method params incoming receive array

4: Value passing and reference passing

Instance operations: Value passing and reference passing (must be declared first)

Output:

5: Output parameter out

Example: Judging the maximum value of an array and returning a maximum value of the data, and the maximum worth of the index

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C # section 21st method declaration and invocation