Don’t get to enter price can someone help

Question

#include <iostream>
#include <string.h>
using namespace std;

int main()
{

int price, username,password;
float tax,totalPrice;
char response='Y';
cout <<"Enter Username: ";
cin >> username;
fflush(stdin);
cout <<"Enter Password: ";
cin >>password;
fflush(stdin);
if(username==1234&& password==6789)
{
do
{
cout <<"\nEnter price of your car: ";
cin >> price;
tax = 0.5*price/100;
totalPrice=price+tax;
cout <<"The total price of your car including tax is %2f\n"totalPrice;
cout << "\nDo you want to check again(Y/N)? ";
fflush(stdin);
cin >> response;
}

while(response!='Y');
{
cout <<"Enter price of your car: ";
cin >> price;
tax=25*price/100;
totalPrice=price+tax;
cout <<"Do you want to check again";
fflush(stdin);
cin >> response;
}

}
else
{
cout <<"Wrong Credentials";
}
return 0;
}

Answer 1

okay thanks

Answer 2

the while was for calculating another tax of 25%