Use a Method Argument in an Interface

The interface IWelcomer declares string Welcome(string name). Complete the Welcomer class so it returns Welcome,  followed by the name and an exclamation mark. Do NOT write a Main method.

For Welcome("Sam") the program prints the output shown in Expected Output.

Expected Output:

Welcome, Sam!↵

= newline. The output ends with a newline — print one after the last line.

Hints2 available

Topics:

Interfaces

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Your Output

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Test Cases

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