урок10_322

#include <iostream>

using namespace std;

void nums() {
    int a = 1;
    int ch1, ch2, ch3; // для суммы
    int n;             // это для кол.-ва цифр

    ch1 = a % 10;
    a /= 10;
    ch2 = a % 10;
    a /= 10;
    ch3 = a % 10;

    if (ch3)
        n = 3;
    else if (ch2)
        n = 2;
    else if (ch1)
        n = 1;
    else
        n = 0;

    cout << "n: " << n << endl;
    cout << "s: " << ch1 + ch2 + ch3 << endl;
}

void nums2() {
    int a = 768;
    int s =0; // для суммы
    int n = 0;             // это для кол.-ва цифр

    if (a)
        n += 1;
    s += a % 10;
    a /= 10;

    if (a)
        n += 1;  // n = n + 1
    s += a % 10; // s = s + (a % 10)
    a /= 10;     // a = a / 10

    if (a)
        n += 1;
    s += a % 10;

    cout << "n: " << n << endl;
    cout << "s: " << s << endl;
}


void test_incr() {
    int x = 0;
    int y = x++;
    cout << y << x << endl;
    x++;
    cout << x << endl;
    cout << x++ << endl;
    cout << x << endl;

    int p = 0;
    int q = ++p;
    cout << q << p << endl;
    ++p;
    cout << p << endl;
    cout << ++p << endl;
    cout << p << endl;
    cout << ++++++++p << endl;
}

void test_while1() {
    int iter = 0;
    while (iter < 10) {
        ++iter;
        cout << iter << ' ';
        //cout << "Hello" << endl;
    }
}

void test_sum() {
    // 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 = 55
    // 1 * 2 * 3 * 4 * 5 * 6 * 7 * 8 * 9 * 10 = ???
    int sum = 0, k = 1, num = 10;
    int prod = 1;
    while (k <= num) {
        sum += k;
        prod *= k;
        ++k;
    }

    int n = 0;
    while (n < num-1/*10*/) {
        n++;
        cout << n;
        cout << " + ";
        /*if (n < 10)
            cout << " + ";
        else
            cout << " = ";*/
    }
    cout << ++n << " = ";
    cout << sum << endl;
    //cout << "prod: " << prod << endl;
}

void test_line() {
    int num = 8;
    bool is_horizontal = 0;

    int k = 0;
    if(is_horizontal)
        while (k < num) {
            cout << "#";
            k++;
        }
    else
        while (k < num) {
            cout << "#" << endl;
            k++;
        }
}

void table_fun() {
    double x = 0;
    const double pi = 3.1415926;
    while (x < 360) {
        cout << x << "\t" << sin(x * pi / 180.0) << endl;
        x += 5;
    }
}

int main() {
    //test_line();
    table_fun();
}