Calculate bill with discount in C++

/*Enter Quantity and cost, Calculate total Bill According to the Following Condition:

if bill is greater than 200 then 2% discount

otherwise give 3% discount */

#include <iostream.h>

#include <conio.h>

void main ()

{

int bill, disc, total, qty, cost;

cout <<" Enter Quantity: ";

cin >>qty;

cout <<" Enter Cost: ";

cin >>cost;

bill=qty*cost;

if (bill>200)

{

disc=bill*2/100;

}

else

{

disc=bill*3/100;

}

total=bill-disc;

cout <<"Total Bill After Discount: "<<total;

getch ();

}