What's a better way to clear cin input? I thought cin.clear and cin.ignore was a good way...?

code:

 void clearInput()
{   
    cin.clear();
    cin.ignore(1000,'\n');
    //cin.ignore( std::numeric_limits<streamsize>::max(), '\n' );

}

My teacher gave me this reply...

this is basically saying that your clearInput doesn't work FYI: ignore is NEVER a good idea as a way of getting rid of all that remains on a line

and your failing this test is exactly the reason why now go clear it the correct way