Is it possible for a switch case to be nested with another switch case in C Language

Question

case 1:
case1:
break;
case 2:
break;
break;
case 2:
case 1:
break;
case 2:
break;
break;

Answer 1

Yes. it is possible. But it is a bad practice. You should try to refactor it.
For example, you can use array or dictionary, which will store values and will return data or invoke functions without inner switch.