Question

Пиріжок у шкільній їдальні коштує a гривень та b копійок. Знайдіть скільки гривень та копійок заплатить Петрик за n пиріжків на C++

Answer 1

    float a = 5.f, b = 0.15f, sum = 0.f;
    size_t N;
    cin >> N;
    for (size_t i = 0; i < N; ++i)
    {
        sum += (a + b);
    }
    cout << sum;

Answer 2

To calculate how much Petryk will pay for n pirozhki, given the price of one pirozhok in a and b (where a is the number of hryvnias and b is the number of kopecks), you can use C++ code. Here's a simple C++ program to do that:

cppCopy code
#include <iostream>

int main() {
    int a, b, n;
    std::cout << "Enter the price of one pirozhok (in hryvnias and kopecks): ";
    std::cin >> a >> b;

    std::cout << "Enter the number of pirozhki: ";
    std::cin >> n;

    // Calculate the total price in kopecks
    int total_kopecks = (a * 100) + b;
    int total_price_kopecks = total_kopecks * n;

    // Calculate the number of hryvnias and kopecks
    int total_price_hryvnia = total_price_kopecks / 100;
    int remaining_kopecks = total_price_kopecks % 100;

    std::cout << "Petryk will pay: " << total_price_hryvnia << " hryvnias and " << remaining_kopecks << " kopecks." << std::endl;

    return 0;
}

Save the above code in a C++ file (e.g., main.cpp), compile it with a C++ compiler, and run the executable. The program will prompt you to enter the price of one pirozhok and the number of pirozhki, and then it will calculate and display the total amount Petryk needs to pay in hryvnias and kopecks.