/C++/How to make sure the user inputs a int and not anything else c++

How to make sure the user inputs a int and not anything else c++

int x;
    std::cin >> x;
    while(std::cin.fail()) {
        std::cout << "Error" << std::endl;
        std::cin.clear();
        std::cin.ignore(256,'\n');
        std::cin >> x;
    }

Source: stackoverflow.com

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