CHALLENGE

$9\mathrm{.}23\mathrm{.}5$: Rearrange the code to implement a class that describes a square with the perimeter as a data member

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$541708\mathrm{.}3490978.$qx$3$zay $7$

Repeat the preceding exercise, but with the perimeter, not the side length, as a data member. Here is the revised class definition.

class Square

$\{$

public:

void set$\_$side $($int initial$\_$length$)$;

void grow $($int amount$)$ ;

int get$\_$perimeter$()$ const;

int get$\_$side$\_$length$()$ const;

private:

int perimeter;

$\}$ ;

The interface of the class should be unchanged. Not all lines are useful.