Exercise $6$: Extracting the Middle $($Reference: Textbook Chapter $3$ Worked Example $3\mathrm{.}1)$

$($for coamination of the problem. save Companice Site$)$

Your task is to extract a string comtaining the middle character from a given string ser For example, if the string is "crate", the result is the string $"a".$ However, if the string has an even number of letters, extract the midlle rwo charactes If the string is "crases", the result is $"at"$

Step $1$ Decide on the branching condition

We aced to tuke different actions for strings of codd and cuen length.

Derefore, the condizion is $1$s the lingth of the srring odd?

In lava, you use the remainder of division by $2$ in find out utether a value is even of odd Then ife lest becomes strjengthi $\%2-1?$