小编MJ *_*tos的帖子

cout << "Options:\n1: Change Name\n2: Change Password\n3: Change Address\n4: Withraw\n5: Deposit\nL: Log out\n>";
while (user_input2 != '1' && user_input2 != '2' && user_input2 != '3' && user_input2 != '4' && user_input2 != '5' && user_input2 != 'L')
{
    cout << "Invalid input";
}

那么我该如何缩短 while 条件呢？

我试着做：

cout << "Options:\n1: Change Name\n2: Change Password\n3: Change Address\n4: Withraw\n5: Deposit\nL: Log out\n>";
while (user_input2 != '1','2','3','4','5','L')
{
    cout << "Invalid input";
}

但它不起作用。

编辑1：“我为我想做的事情添加了更多提示”