Consider the following statements and answer the questions that follow them:

QString userInput $=$ QInputDialog::getText$(0,$ "User Details", "Enter your full name $($each word separated by :$)")$;

QStringList userInfo $=$ userInput.split$("$:$")$;

if$($userInfo$.$length$()<2)$

QMessageBox::warning$(0,$ "Error", "Enter your full name!", $0,0)$;

else

QMessageBox::information$(0,$"Result",QString$("$Your name consists of $\%1$ words."$).$arg$($userInfo$.$length$()),0,0)$;

$1$ Write a non$-$empty input string that the user can enter in the QInputDialog dialog that will be bring up the error message in the QMessageBox dialog in the code above. $(2)$

$2$ Write the output string displayed in the QMessageBox dialog when the user enters the string Mike:William:Owen in the QInputDialog dialog. $(2)$

$3$ What is the effect of entering a number, say $4444,$ in the above QInputDialog dialog? $(2)$

$4$ Explain one similarity and one difference between QInputDialog and QMessageBox dialogs for obtaining user input. $(4)$