please do the class diagram for the following code.please urgent****CLASS DIAGRAM"******very important .please do properly

#include

#include

using namespace std;

struct phone

{

string model;

string feature;

string price;

};

class stock

{

private:

int top;

int count;

struct phone phones[100];

public:

stock() {

count = 0;

top=-1;

}

~stock() {

}

void push(struct phone new_p){

top = getCount();

phones[top].model = new_p.model;

phones[top].feature = new_p.feature;

phones[top].price = new_p.price;

top++;

setCount(top);

}

struct phone pop() {

struct phone tmp;

if(top == -1)

cout<<"Stack is empty!"<

else

{

tmp.model = phones[top].model;

tmp.feature = phones[top].feature;

tmp.price = phones[top].price;

top--;

}

}

void setCount(int c)

{

count = c;

}

int getCount()

{

return count;

}

int getCountA()

{

int c=0;

for(int i=0; i

if(phones[i].model=="A")

c++;

return c;

}

int getCountB()

{

int c=0;

for(int i=0; i

if(phones[i].model=="B")

c++;

return c;

}

int getCountC()

{

int c=0;

for(int i=0; i

if(phones[i].model=="C")

c++;

return c;

}

struct phone getPhone(int n) {

return phones[n];

}

void addPhone(struct phone p) {

int c = getCount();

c++;

setCount(c);

phones[c-1] = p;

}

void setPhone(int n, struct phone t)

{

phones[n].model = t.model;

phones[n].feature = t.feature;

phones[n].price = t.price;

}

void display_all()

{

for(int i=0; i

{

cout<

}

}

void display_byModel(string m)

{

for(int i=0; i

{

if(phones[i].model == m)

cout<

}

}

void display_byFeature(string m)

{

for(int i=0; i

{

if(phones[i].feature == m)

cout<

}

}

void display_byPrice(string m)

{

for(int i=0; i

{

if(phones[i].price == m)

cout<

}

}

void display_Sort()

{

cout<<"No Model Feature Price"<

for( int i=0; i

{

for ( int j=i; j

{

if(phones[j].model == "A")

{

if(phones[i].model != "A")

{

struct phone tmp;

tmp.model = phones[i].model;

tmp.feature = phones[i].feature;

tmp.price = phones[i].price;

phones[i].model = phones[j].model;

phones[i].feature = phones[j].feature;

phones[i].price = phones[j].price;

phones[j].model = tmp.model;

phones[j].feature = tmp.feature;

phones[j].price = tmp.price;

}

}

}

}

for( int i=0; i

{

for ( int j=i; j

{

if(phones[j].model == "B")

{

if(phones[i].model == "C")

{

struct phone tmp;

tmp.model = phones[i].model;

tmp.feature = phones[i].feature;

tmp.price = phones[i].price;

phones[i].model = phones[j].model;

phones[i].feature = phones[j].feature;

phones[i].price = phones[j].price;

phones[j].model = tmp.model;

phones[j].feature = tmp.feature;

phones[j].price = tmp.price;

}

}

}

}

display_all();

}

};

int main()

{

stock p;

struct phone t;

struct phone b;

int go_on;

struct phone new_phone;

ifstream myfile ("stock.txt");

if (myfile.is_open())

{

while(1)

{

getline(myfile, new_phone.model);

getline(myfile, new_phone.feature);

getline(myfile, new_phone.price);

p.addPhone(new_phone);

if(myfile.eof())

break;

}

myfile.close();

}

do{

cout << "Are you Customer(1) or Shop Owner(2)?";

int choice;

cin>>choice;

switch(choice)

{

case 2:

cout<<"1. Display phone list sorted by model"<

cout<<"2. Order Phone"<

cout<<"3. Receive stock update info"<

cout<<"4. View a phone info"<

int c2;

cin>>c2;

switch(c2)

{

case 1:

p.display_Sort();

break;

case 2:

cout<<"Available list(model): "<

if(p.getCountA()<10)

cout<<"A :"<

if(p.getCountB()<10)

cout<<"B :"<

if(p.getCountC()<10)

cout<<"C :"<

cout<<"Add a phone"<

cout<<"model: ";

cin>>t.model;

cout<<"feature: ";

cin>>t.feature;

cout<<"price: ";

cin>>t.price;

p.push(t);

break;

case 3:

cout<<"Recently added phone"<

cout<<"model: "<

cout<<"feature: "<

cout<<"price: "<

break;

case 4:

cout<<"---Total count of phones in the stock now:"<

cout<<"Input No of phone you want to see:";

int n;

cin>>n;

cout<

cout<

cout<

break;

default:

break;

}

break;

case 1:

cout<<"Search by model(1) feature(2) price(3):"<

cout<<"Buy a phone(4)"<

cout<<"Get invoice(5)"<

int c;

string m,f,pr;

cin>>c;

switch(c)

{

case 1:

cout<<"model:";

cin>>m;

p.display_byModel(m);

break;

case 2:

cout<<"feature:";

cin>>f;

p.display_byFeature(f);

break;

case 3:

cout<<"price:";

cin>>pr;

p.display_byPrice(pr);

break;

case 4:

cout<<"Phone list:"<

p.display_Sort();

cout<<"Input the No you are gonna buy:"<

int n;

cin>>n;

b.model = p.getPhone(n-1).model;

b.feature = p.getPhone(n-1).feature;

b.price = p.getPhone(n-1).price;

for( int i = n; i

{

p.setPhone(i, p.getPhone(i-1));

}

//p.setPhone(p.getCount()-1,NULL);

break;

case 5:

cout<<"Invoice:"<

cout<<"Model:"<

break;

default:

break;

}

break;

}

cout<<"Continue?(yes:1, No:0)";

cin>>go_on;

}while(go_on);

return 0;

}

stock.txt

A

abc

120

B

sdf

150

C

ewr

190

A

wer

302

A

asdf

405

B

qwer

900

C

wew

340

B

wers

230

A

ass

643