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| #include <iostream> | |
| using namespace std; | |
| int main() { | |
| /*task 1 | |
| Знайти добуток усіх цілих чисел від а до 20 (значення а вводиться з клавіатури: 1 | |
| <= a <= 20). | |
| */ | |
| int x; | |
| long long number = 1; | |
| cout << "Enter the value of x (1 <= x <= 20): "; | |
| cin >> x; | |
| if (x < 1 || x > 20) { | |
| cout << "Invalid x. It must be in the range 1 to 20." << endl; | |
| } | |
| for (int i = x; i <= 20; i++) { | |
| number *= i; | |
| } | |
| cout << "Product of all integers from " << x << " to 20 equals: " << number << endl; | |
| /*task 2 | |
| Написати програму, яка виводить на екран таблицю множення на k, де k - номер | |
| варіанта. Наприклад, для 7-го варіанта: | |
| 7 x 2 = 14; | |
| 7 x 3 =21. | |
| */ | |
| int k; | |
| cout << "Enter number: "; | |
| cin >> k; | |
| for (int i = 1; i <= 10; ++i) { | |
| cout << k << " * " << i << " = " << k * i << endl; | |
| } | |
| } |
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