RE: help with c++ if test

Here's a new rule.

Assume that goto does not exist. Just get rid of it. It's gone, *waves hands*.

Now, rewrite that code.

Take care,
Sina



-----Original Message-----
From: programmingblind-bounce@xxxxxxxxxxxxx 
[mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of Kristoffer 
Gustafsson
Sent: Wednesday, February 09, 2011 2:03 PM
To: programmingblind@xxxxxxxxxxxxx
Subject: Re: help with c++ if test

Hi.
ok, some code of mine looks like
#include <iostream>
int main()
{
string test;
cin >>test;
if (test=="fine" goto good;

good:
cout <<"it works!";
return 0;
}

I try this and I get expected `before goto.
What can be wrong?
/Kristoffer

----- Original Message ----- 
From: "Ken Perry" <whistler@xxxxxxxxxxxxx>
To: <programmingblind@xxxxxxxxxxxxx>
Sent: Wednesday, February 09, 2011 7:53 PM
Subject: RE: help with c++ if test


It is easy to do text adventures or any programming without goto.  Note that 
my commercial mud has 0 goto statements in it.  Now all classes in college 
will tell you to avoid goto unless you're dealing with programming operating 
systems and need to be able to jump out of scope.  Which is one of the 
reasons you do not want to use goto.  For example

 Void myfunc(){
Goto two;
}

Void myFunc2(){
Two:

}

You can actually jump function to function with goto which breaks all kinds 
of things in functional and object oriented programming.  Now that is 
necessary some times when doing error handling.  The truth is though if your 
coding your own application you really should never need goto.   If you find 
yourself using goto you have probably designed your program wrong.

I will not go into a deep why or why not to use it because if your thinking 
you cannot create an adventure game without it you will not understand a lot 
of my explanation.  I think you need to go through some tutorials on c or 
c++ which ever one you're using because you have a lot to learn.



Ken

-----Original Message-----
From: programmingblind-bounce@xxxxxxxxxxxxx 
[mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of Kristoffer 
Gustafsson
Sent: Wednesday, February 09, 2011 1:41 PM
To: programmingblind@xxxxxxxxxxxxx
Subject: Re: help with c++ if test

Hi.
Without goto it would be very hard to do text adventures.
I don't think it can be done, or can it?
Also, if I want my program to exit instead of continuing, how do I do?
I mean for example, if I die in an adventure, I want to exit the program at
that time, not continue the game.
/Kristoffer
----- Original Message ----- 
From: "Littlefield, Tyler" <tyler@xxxxxxxxxxxxx>
To: <programmingblind@xxxxxxxxxxxxx>
Sent: Wednesday, February 09, 2011 7:28 PM
Subject: Re: help with c++ if test


> That produces all sorts of problems. jumping to the bottom of a loop is no
> problem with a goto, and it avoids issues with your exiting variable. it's
> also quicker, because you just jump to the bottom. otherwise you may
> break, but it's still going to have to do one more check (two, actually,
> depending on how the compiler does things) to see if exiting is false.
> On 2/9/2011 11:23 AM, Lex wrote:
>> 09.02.2011 20:17, Littlefield, Tyler пишет:
>>> really really highly recommend you avoid goto. This isn't basic, and
>>> they're not very useful except for in some odd cases, far and few
>>> between. Such as jumping out of two nested loops like so:
>>> int i, j;
>>> for (i = 0; i < 100; i++)
>>> {
>>> for (j = 0; j < 100; j++)
>>> {
>>> if (i+j == 100)
>>> goto botttom;
>>> }
>>> }
>>> bottom:
>>> //do something here
>>
>> Actually, effect you're trying to achieve is more correctly by the
>> conditional variable (at least in terms of procedural programming):
>> bool exiting=false;
>> for (i = 0; i < 100 && !exiting; i++)
>> {
>> for (j = 0; j < 100 && !exiting; j++)
>> {
>> if (i+j == 100)
>> exiting=true;
>> }
>> }
>>
>>
>> or may be even
>> for (j = 0; j < 100; j++)
>> {
>> if (i+j == 100)
>> {
>> exiting=true;
>> break;
>> }
>> }
>> }
>>
>>
>> Lex
>>
>> __________
>> View the list's information and change your settings at
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>>
>>
>
>
> -- 
>
> Thanks,
> Ty
>
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