Fix these codes so they are able to debug and compile in Linux

Circle.h code below

#ifndef CIRCLE$\_$H

#define CIRCLE$\_$H

#include

using namespace std;

class Circle

$\{$

private:

double radius;$//$radius of the circle

double $*$ area;$//$area of the circle

double $*$ circumference;$//$circumferencee of the circle

double pi$=3\mathrm{.}1415$;$//$ the value of pi

public:

Circle$()\{$radius$=0$;area$=$new double;area$=0$;circumference$=$ new double;$\}$

void set$\_$rad$($double rad$)\{$radius $=$ rad;$\}$;

double compute$\_$area$()$

$\{*$area $=($pi$*$pow$($radius$,2\mathrm{.}0))$;return $*$area;$\}$;

double compute$\_$circumference$()$

$\{*($circumference$+1)=2*$pi$*$radius;return $*$circumference;$\}$

double check$\_$rad$($double rad$)$

$\{$if$($rad$>0$ && rad!$=0)\{$return true;$\}$else$\{$return false;$\}\}$;

~Circle$()$;

$\}$;

#endif

circle.cpp code below

#include

#include "circle.h$"$

using namespace std;

int main$()$

$\{$

double users$\_$radius;$//$ value to store users given radius value;

Circle $*$ first$\_$circle;$//$ define a pointer to a circle

first$\_$circle $=$ new Circle$()$;$//$ allocate memory for the object and call the constructor

cout$<<$"This Program computes various metrics of a circle"$>$users$\_$radus;

first$\_$circle$->$set$\_$rad$($users$\_$radius$)$;

cout$<<$"Area of circle is:$"$