The syntax of the nested switch statement is;
switch (expression)
{
case constant 1:
statement(s);
break;
switch (expression)
{
case constant 1:
statement(s);
break;
case constant 2:
statement(s);
break;
.
.
.
default:
statement(s);
}
case constant 2:
statement(s);
break;
.
.
.
default:
statement(s);
}