Convert If/Else's into a switch somehow - c++

Question

So basically what I'm trying to do it turn this chunk of code into a switch statement somehow. I'm not really sure how to do this. I had a couple of ideas like making an enum with keywords that had a range of values (ie "enum hare { ONE =(range from 1-5) TWO = (range from 6-8)} - But i dont know if that is an error :S
Hopefully I've been clear in what I'm trying to ask.
int y = 1 + rand() % 10;
// determine which move to make
if ( y == 1 || y == 2 ) {
hare += 0;
} else if ( y == 3 || y == 4 ) {
hare += 9;
} else if (y == 5) {
hare -= 12;
} else if (y >= 6 && y <= 8){
hare += 1;
} else if (y == 9 || y == 10){
hare -= 2;
}else {
++( hare );
}
if ( hare < 1 ) {
hare = 1;
} else if ( hare > RACE_END ) {
hare = RACE_END;
}

Answer 1

The first question is whether there is real value in doing the conversion. Then the operation is actually simple for this case, since in all cases except the else there is a small number of valid cases:
switch (y) {
case 1: case 2:
break;
case 3: case 4:
hare += 9;
break;
case 5:
hare -= 12;
break;
case 6: case 7: case 8:
hare += 1;
break;
case 9: case 10:
hare -= 2;
break;
default:
++hare;
}

Answer 2

If you want to use switch statement, you can do like this
switch( y ){
case 1:
case 2: hare += 0; break;
case 3:
case 4: hare += 9; break;
case 5: hare -= 12; break
case 6:
case 7:
case 8: hare += 1; break;
case 9:
case 10: hare -= 2; break;
default: ++(hare);
}
But, using enum, enum hare { ONE =(range from 1-5) TWO = (range from 6-8)} is that ... you are trying to store multiple values in one variable, which is not possible.
Reference for switch statement

Answer 3

You can easily do something like this:
switch(y)
{
case 1:
case 2:
//do something
break;
default:
//
}
Therefore falling through your case conditions according the values of y.

Answer 4

int y = 1 + rand() % 10;
switch ( y )
{
case 1:
case 2:
hare += 0;
break;
case 3:
case 4:
hare+= 9;
break;
case 5:
hare -= 12;
break;
case 6:
case 7:
case 8:
hare += 1;
break;
case 9:
case 10:
hare -= 2;
break;
default:
++hare;
break;
}
if ( hare < 1 ) {
hare = 1;
} else if ( hare > RACE_END ) {
hare = RACE_END;
}

Answer 5

You can do it like this.
int y = 1 + rand() % 10;
switch(y)
{
case 1: //1 or 2
case 2:
hare += 0;
break;
case 3: //3 or 4
case 4:
hare += 9;
break;
case 5:
hare -= 12;
break;
case 6:
case 7:
case 8:
hare += 1;
break;
case 9:
case 10:
hare -= 2;
break
default:
if ( hare < 1 ) {
hare = 1;
} else if ( hare > RACE_END ) {
hare = RACE_END;
}
else
++( hare );
break;
}