We can use out parameters in our own methods as well. In this example, Yell() converts phrase to uppercase and sets a boolean variable to true:
static string Yell(string phrase, out bool wasYellCalled)
{
wasYellCalled = true;
return phrase.ToUpper();
}out parameter must have the out keyword and its expected typeout parameter must be set to a value before the method endsWhen calling the method, don’t forget to use the out keyword as well:
string message = "garrrr";
Yell(message, out bool flag);
// returns "GARRRR" and flag is trueDeclare a method Whisper() with a string parameter and out bool parameter. It should return a string.
Define the method body. Whisper() should work like Yell(), but instead of returning an uppercase string, it returns a lowercase string.
Once defined, you should be able to call it like:
string statement = "GARRRR";
Whisper(statement, out bool marker);
// should return "garrrr" and set marker to true;Call Whisper() in the Main() method and print the returned value to the console.
Make sure to use an out modifier when calling the method!