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

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$541708\mathrm{.}3480878.$qx$3$zqy$7$

Repeat the preceding

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.