Question

ПОМОГИТЕ НАПИСАТЬ КОДЫ НА С++ ОЧЕНЬ СРОЧНО НУЖНО

Answer 1

Код:

• #include <fstream>
• #include <cmath>
• void first_task(std::ifstream &cin, std::ofstream &cout) {
•    int n, k = 1; cin >> n >> k;
•    cout << n / k;
• }
• void second_task(std::ifstream &cin, std::ofstream &cout) {
•    int N; cin >> N;
•    cout << 2 * (N / 2 + 1);
• }
• void third_task(std::ifstream &cin, std::ofstream &cout) {
•    int N; cin >> N;
•    auto t = [](int c, int N){return c / (int) pow(10, N) % 10;};
•    cout << t(N, 2) + t(N, 1) + t(N, 0);
• }
• void fourth_task(std::ifstream &cin, std::ofstream &cout) {
•    int N; cin >> N;
•    for (int it = 0; it < log2(N); ++it) {
•        cout << pow(2, it) << " ";
•    }
• }
• void fifth_task(std::ifstream &cin, std::ofstream &cout) {
•    int h, a, b;
•    cin >> h >> a >> b;
•    int h0 = h - a, dx = a - b;
•    int g = 1 + h0/dx + (h0%dx + dx - 1)/dx;
•    if (g < 0)
•        cout << INFINITY;
•    else
•        cout << g;
• }
• int main() {
•    std::ifstream cin("input.txt");
•    std::ofstream cout("output.txt");
•    // Choose your function
•    int N = 0; // 0-4
•    void (*tasks[5]) (std::ifstream &, std::ofstream &) = {first_task, second_task, third_task, fourth_task, fifth_task};
•    tasks[N](cin, cout);
•    return 0;
• }