task for multi variable

#include <iostream>
#include <cmath>

using namespace std;

int main()
{
    int AnyNUm;

    std::cout << "Enter any number to square root: " << std::endl;
    std::cin >> AnyNUm;

    double root = sqrt(AnyNUm);
    root = round(root * 1000)/1000;

    std::cout <<"Root: " << root << std::endl;

    return 0;
}