Q$3$: Given the following function call and the output it produces, define the greeting$()$ function. Make sure that the function does not print$(),$ but return a string with the greeting. For that you need to concatenate $(+)$ the strings, 'Hello, $\text{'}$ and the name of the person $($parameter$),$ and an exclamation!

print$($greeting$(\text{'}$John$\text{'}))$

Hello, John!