#include

using namespace std;

$//$ Base class

class Road$\{$

string name;

int numberOfLanes;

int maximumSpeed;

public:

Road$($string n$,$int l$,$int s$)\{$

name $=$ n;

if$($l$>0)\{$

numberOfLanes $=$ l;

$\}$else$\{$

int x$=0$;

while$($x$<=0)\{$

cout$<<"$

Enter valid number of lanes";

cin$>>$x;

$\}$

numberOfLanes $=$ x;

$\}$

if$($s$>0$ && s$<=100)\{$

maximumSpeed $=$ s;

$\}$else$\{$

int x$=0$;

while$($x$>0$ && x$<=100)\{$

cout$<<"$

Enter valid maximum speed";

cin$>>$x;

$\}$

maximumSpeed $=$ x;

$\}$

$\}$

void toString$()\{$

cout$<<"$

Road Name : $"<0)\{$

numberOfLanes $=$ l;

$\}$else$\{$

int x$=0$;

while$($x$<=0)\{$

cout$<<"$

Enter valid number of lanes";

cin$>>$x;

$\}$

numberOfLanes $=$ x;

$\}$

$\}$

void setSpeed$($int s$)\{$

$//$ condition for valid maximumSpeed

if$($s$>0$ && s$<=100)\{$

maximumSpeed $=$ s;

$\}$else$\{$

int x$=0$;

while$($x$>0$ && x$<=100)\{$

cout$<<"$

Enter valid maximum speed";

cin$>>$x;

$\}$

maximumSpeed $=$ x;

$\}$

$\}$

$//$ Getter function

string getName$()\{$

return name;

$\}$

int getNumberOfLanes$()\{$

return numberOfLanes;

$\}$

int getMaximumSpeed$()\{$

return maximumSpeed;

$\}$

$\}$;

$//$ TollRoad class inherit the Road class

$//$ Derived class

class TollRoad : public Road$\{$

int toll;

public:

$//$ parameterized constructor

TollRoad$($string name,int l$,$int s$,$int t$)$:Road$($name$,$l$,$s$)\{//$ pass value to base class constructor

$//$ condition for valid Toll value

if$($t$>0)\{$

toll $=$ t;

$\}$else$\{$

int x$=0$;

while$($x$<=0)\{$

cout$<<"$

Enter toll value greater than $0$ : $"$;

cin$>>$x;

$\}$

toll $=$ x;

$\}$

$\}$

$//$ setter function

void setToll$($int t$)\{$

$//$ condition for valid Toll value

if$($t$>0)\{$

toll $=$ t;

$\}$else$\{$

int x$=0$;

while$($x$<=0)\{$

cout$<<"$

Enter toll value greater than $0$ : $"$;

cin$>>$x;

$\}$

toll $=$ x;

$\}$

$\}$

int getToll$()\{//$ getter method

return toll;

$\}$

void TolltoString$()\{//$ to string method

toString$()$;

cout$<<"$

Toll Value : $"<$