Can we put "greater then, less then or equal to" with switch statement??

Question

For example; can we write like this in switch statement:
switch(age){
case <=20;
cout<<"statement ";
break;
}

Answer 1

Maybe something like:
case 0 ... 20
cout <<
case 20 ... 99
cout <<
Not sure never tried it.

edit: @ Jamie Thanks. That is good to know. I wasn't aware that was only usable due to my compiler. I will have to remember to look out for that sort of thing