#include <iostream> using namespace std; double total_cost(int number_par, double price_par) { } int main() { double price, bill; int number; cout << "Enter the number of items purchased: "; cin >> number; cout << "Enter the price per item $"; cin >> price; bill = total_cost(number, price); cout.setf(ios::fixed); cout.setf(ios::showpoint); cout.precision(2); cout << number << " items at " << "$" << price << " each.\n" << "Final bill, including tax, is $" << bill << endl; return 0; }