成功使用连续while(cin>>输入)[重复]

while(cin >> cel)

int main() {
    double fah = 0;
    cout << "Enter a fahrenheit value:\n";
    while (cin >> fah) { // executes until a non-number input is entered
        cout << fah << "F == " << fah_to_cel(fah) << "C\n";
    }
    // tried cin.clear();  here
    // tried cin.clear(ios_base::eofbit); here
    double cel = 0;
    cout << "Enter a celcius value:\n";
    while(cin >> cel) { // executes until a non-number input is entered
        cout << cel << "C == " << cel_to_fah(cel) << "F\n";
    }
    return 0;
}