Create a class Medicalshopee containing - medicine - qty - price Medicine details are stored into the file “medical.txt” .When any medicine has to be sold, it is first searched into the file, if found, the qty is decremented by that much qty to be sold.

#include<conio.h>
#include<stdio.h>
#include<string.h>
#include<fstream.h>
#include<iostream.h>

class Medicalshopee
{
char name[20];
int qty;
float price;

public:
void accept()
{
cout<<endl<<"Enter medicine name: ";
cin>>name;
cout<<endl<<"Enter quantity: ";
cin>>qty;
cout<<endl<<"Enter price: ";
cin>>price;
}

void search(int n)
{
char mname[20];
int q;
int flag=0;
cout<<endl<<"Enter Medicine name to be searched: ";
cin>>mname;
cout<<endl<<"Enter Medicine quantity: ";
cin>>q;
for(int i=0;i<n;i++)
{
file.read((char*)&m[i],sizeof(m[i]));
if(strcmp(m[i].name,mname)==0)
{
if(qty-q>=0)
{
m[i].qty=m[i].qty-q;
file.write((char*)&m[i],sizeof(m[i]));
flag=1;
break;
}
else
{
cout<<endl<<"Quantity of stock not sufficient!";
flag=1;
break;
}
}
}
if(flag==0)
  cout<<endl<<"Medicine not availabe!";
}

void display(int n)
{
for(int i=0;i<n;i++)
{
 file.read((char*)&m[i],sizeof(m[i]));
 cout<<endl<<"M.Name: "<<name<<" Quantity: "<<qty<<" Price: "<<price;
}
}
}*m;//End of class

fstream file;

int main()
{
int n;
clrscr();
file.open("D:/Apurva/Medical.txt",ios::in|ios::out);
cout<<endl<<"Enter number of medicines: ";
cin>>n;
m=new Medicalshopee[n];
for(int i=0;i<n;i++)
{
 m[i].accept();
 file.write((char*)&m[i],sizeof(m[i]));
}
cout<<endl<<"Search Medicine in store now!";
char ch='y';
do
{
file.seekg(0);
m->search(n);
file.seekg(0);
m->display(n);
cout<<endl<<"Do u wana cont(Y/N): ";
fflush(stdin);
cin>>ch;
}
while(ch=='Y' || ch=='y');
file.close();
getch();
return 0;
}