Whats the output...

[Mohnish Khiani]

class Stepper
{
enum Roman{I,V,X,L,C,M}
public static void main(String args[])
{
int x=7;
int z=2;
Roman r=Roman.X;
do{
switch(r)
{
case C:r=Roman.L;break;
case X:r=Roman.C;
case L:if(r.ordinal()>2)z+=5;
case M:x++;
}
z++;
}while(x<10);
System.out.println(z);
}
}

The Output given is 21... I couldn't understand how...please explain..

[Raymond Tong]

Do you run it using IDE like Eclipse?
You could check how the code executes using debug mode.

[Rob Spoor]

The main consideration is the lack of break statements. That means that if roman == Roman.X three switch statements will be executed:
- roman = Roman.C;
- if(roman.ordinal>2)z+=5;
- x++

Now just loop through the code; I suggest you do it manually. Like this:
- start: x == 7, z == 2, roman == X
- iteration 1: roman == X so roman = C, z += 5, x++, and another z++. At the end, x == 8, z == 8 and roman == C
- iteration 2: ...

Renamed your Roman variable because the forum won't let me use its name outside code blocks.

[Rene Larsen]

And the code as it is, can't compile...

HINT: Error is in line 14 (maybe just a small typo)

[Mohnish Khiani]

sorry for that...that was my typing error...

[Mohnish Khiani]

hey...sorry and thanks for your replys i got it...i was making a silly mistake...thanks everyone