BILLS.CPP

#include<iostream.h>
#include<conio.h>
#include<iomanip.h>
struct elect
{
float bill;
float unit;
char name[15];
};

void main()
{
struct elect *p;
int i,n;
clrscr();
cout<<"How many users\n";
cin>>n;
p=new struct elect [n];
for(i=0;i<n;i++)
{
cout<<"\n enter user name , units consumed for user"<<(i+1)<<endl;
cin>>((p+i)->name);
cin>>((p+i)->unit);
}

for(i=0;i<n;i++)
{
 if(((p+i)->unit)==0)
 {
  (p+i)->bill=50;
  continue;
 }
  if((p+i)->unit<=100)
  {
   (p+i)->bill=(0.6)*((p+i)->unit);
  }

    if(((p+i)->unit)>100&&((p+i)->unit)<=300)
    {
     (p+i)->bill=(0.8)*((p+i)->unit);
    }
      if(((p+i)->unit)>300)
      {
      (p+i)->bill=(0.9)*((p+i)->unit);
       }
 if((p+i)->bill>300)
{
(p+i)->bill+=0.15*((p+i)->bill);
}
}
cout<<"NAME\t\tUNITS\t\tBILL\n";
for(i=0;i<n;i++)
{
cout<<endl<<(p+i)->name;
cout<<"\t\t"<<(p+i)->unit;
cout<<"\t\t"<<setprecision(4)<<(p+i)->bill;
}

delete [] p;
getch();
}