Answer to Question #304566 in C++ for Mansi

Question

A company is planning to provide an extra discount to it's customers. Every order has an order ID associated with it which is a sequence of digits. The discount is calculated as the count of unique repeating digits in the order ID. Write a code to find the discount percentile given to the customers.

Answer 1

#include <iostream>


int discount(int order) {
    int digits[10] = {0};

    while (order > 0) {
        int d = order % 10;
        digits[d]++;
        order = order / 10;
    }

    int res = 0;
    for (int i=0; i<10; i++) {
        if (digits[i] > 1) {
            res++;
        }
    }
    return res;
}


int main() {
    int order;

    std::cin >> order;
    int p = discount(order);
    std::cout << "The discount is " << p << "%";

    return 0;
}