/
#include<stdio.h>
#include<conio.h>
#define VAT 7.0
int main()
{
int unit, unit_use, pay=0, service_charge;
float bill = 0;
printf(“\n Enter water unit : “);
scanf(“%d”, &unit);
if(unit > 100){
unit_use = unit – 100;
pay += unit_use * 15;
unit -= unit_use;
}
if(unit > 40 && unit <= 100){
unit_use = unit – 40;
pay += unit_use * 10;
unit -= unit_use;
}
if(unit > 20 && unit <= 40){
unit_use = unit – 20;
pay += unit_use * 7;
unit -= unit_use;
}
if(unit > 10){
pay += unit * 5;
}
printf(” Enter Service charge : “);
scanf(“%d”, &service_charge);
bill = pay + service_charge;
printf(“\n\n Water bill before VAT is %.2f Bath”, bill);
bill = bill * ( 1 + (VAT / 100));
printf(“\n VAT %.2f%% is %.2f Bath”, VAT, (bill * VAT) / (100+VAT));
printf(“\n\n Total water bill is %.2f Bath\n”, bill);
getch();
}