如何在while语句中包含多个条件？(C++)

Question

是否有可能在while语句中有三个条件？

例如:

cout << "\n\nHow would you like your parcel shipped?\n (please type standard, express"
    " or same day)" << endl;
cin >> method;
while (method != ("standard" && "express" && "same day"))
{
    cout << "invalid input: please follow the instructions carefully.." << endl;
    cout << "\n\nHow would you like your parcel shipped?\n (please type 'standard',"
        " 'express' or 'same day')" << endl;
    cin >> method;
}

我问的原因是当我运行这段代码时,它会进入一个无限循环,我无法理解为什么.

Answer 1

while (method != "standard" && method != "express" && method != "same day")