seemingly random sequence of numbers is really a message since each number represent a character or a symbol. Matlab, like most programming languages, uses the ASCII code. Every character in this system is assigned a value between $0$ and $255.$ All strings in Matlab can therefore be looked upon as vectors with numbers that Matlab interprets as characters. If we want to convert numbers to characters, we can use the char function.

$($a$)$ Which sentence is represented by $x?$

$($b$)$ What is the ascii$-$code for 'Enter'?

$($c$)$ In the same way as we use find for numbers, we can use findstr to find positions of text. What is the position of the $\text{'}r\text{'}$ in the text above?