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do while without body

 
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do while without body
bhandari
4 Feb, 2008 - 08:58 AM
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Hi All,

Kindly look into the code samples below:

CODE
int I =2;
do                              
while ( I > 1 );


CODE
int I =2;
do
    System.out.print("I is " + I);
while ( I > 1 );


The first one gives compilation error while the second one doesn't. Any explaination?
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DillonSalsman
RE: Do While Without Body
4 Feb, 2008 - 09:12 AM
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QUOTE(bhandari @ 4 Feb, 2008 - 09:58 AM) *

Hi All,

Kindly look into the code samples below:

CODE
int I =2;
do                              
while ( I > 1 );


CODE
int I =2;
do
    System.out.print("I is " + I);
while ( I > 1 );


The first one gives compilation error while the second one doesn't. Any explaination?

Not absolutely positive but I think the computer expects you to give it something to do if you says do{}while()
Kinda like if I called you over in the middle of the street to talk to you and then just plugged my headphones in my ear.
I wonder if computers think like that...hmmm

This post has been edited by DillonSalsman: 4 Feb, 2008 - 09:12 AM
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iNaStY v3
RE: Do While Without Body
4 Feb, 2008 - 09:25 AM
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Yes I'm pretty sure you're right. You have to tell the computer to do something when you say do{}while(), otherwise the do loop is incomplete.

The Do-Statement syntax looks like this:

do
Statement
while ( Expression );



Hope this helps (I looked it up in my book lol)

This post has been edited by iNaStY v3: 4 Feb, 2008 - 09:27 AM
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Programmist
RE: Do While Without Body
4 Feb, 2008 - 03:10 PM
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QUOTE(bhandari @ 4 Feb, 2008 - 10:58 AM) *

Hi All,

Kindly look into the code samples below:

CODE
int I =2;
do                              
while ( I > 1 );


CODE
int I =2;
do
    System.out.print("I is " + I);
while ( I > 1 );


The first one gives compilation error while the second one doesn't. Any explaination?


Not sure why you'd want to do that, but add a semicolon and it will compile.

CODE
int I =2;
do                              
;  // <---- semicolon
while ( I > 1 );
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B-Boy209
RE: Do While Without Body
4 Feb, 2008 - 03:35 PM
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QUOTE(bhandari @ 4 Feb, 2008 - 09:58 AM) *

Hi All,

Kindly look into the code samples below:

CODE
int I =2;
do                              
while ( I > 1 );


CODE
int I =2;
do
    System.out.print("I is " + I);
while ( I > 1 );


The first one gives compilation error while the second one doesn't. Any explaination?

the reason why the first one doesnt work is because like somebody mentioned you are trying to tell it to "do" something "while" something so if you put nothing it wont compile because there is nothing there for it to do while something...so by putting
CODE

int i=2;
do
; <<<<<<<<this right here is telling it to "do" nothing but if there was no semi-colon that would mean that there wasnt nothing there at all...get it
while (i>2);


This post has been edited by B-Boy209: 4 Feb, 2008 - 03:37 PM
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bhandari
RE: Do While Without Body
4 Feb, 2008 - 10:35 PM
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Thanks to you all.
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