Calculating Sales Tax on a Purchase in C++

main.cpp

#include <cstdio>

int main() {
    double purchase, tax_rate, total_bill;
    char county;
    
    printf("AMOUNT OF PURCHASE? ");
    scanf("%lf", &purchase);
    printf("COUNTY? ");
    scanf(" %c", &county);
    
    if (county == 'A') {
        tax_rate = 0.07;
    } else {
        tax_rate = 0.06;
    }
    
    total_bill = purchase + (purchase * tax_rate);
    printf("TOTAL BILL: %.2lf\n", total_bill);
    
    return 0;
}