Task_4

#include <iostream>
#include <cmath>
int main() {
    unsigned int a, b;
    std::cin >> a >> b;
    if (a > b) {
        std::cout << "Invalid input.";
    }
    for (int i = a; i <= b; i++) {
        bool isPrime = true;
        int SqrtOfI = sqrt(i);
        for (int k = 2; k <= SqrtOfI; k++) {
            if (i % k == 0) {
                isPrime = false;
            }
        }
        if (isPrime&&i!=1) {
            std::cout << i << " ";
        }
    }
    return 0;
}