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How to use 'break' jump out of 3 nested loop?

 
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cchappyboy



Joined: 03 Dec 2008
Posts: 45

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How to use 'break' jump out of 3 nested loop?
PostPosted: Wed Jun 01, 2011 9:28 am     Reply with quote
Hi

I want to use 'break' jump out of loops. The code in below.
Code:

while(condition1)
{
   while(condition2)
   {
      while(condition3)
      {
           if(condition)
           {
               break;
           }
      }//loop3
         dosomething3();
    }//loop2
         dosomething2();
}//loop1
dosomething1();


So after break is happened, which line is going to be executed.
Thanks.
Ttelmah



Joined: 11 Mar 2010
Posts: 19544

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PostPosted: Wed Jun 01, 2011 9:34 am     Reply with quote
'break', always exits the innermost loop only.
What will be executed, will depend on what condition2, and condiftion1 evaluate to.
Normal method:
Code:

int1 exit=FALSE;

while(condition1 && (exit==FALSE))
{
   while(condition2 && (exit==FALSE))
   {
      while(condition3 && (exit==FALSE))
      {
           if(condition)
           {
               exit=TRUE;
           }
      }//loop3
         dosomething3();
    }//loop2
         dosomething2();
}//loop1
dosomething1();

This way you can design your code to exit as many levels as you want.

Best Wishes
FvM



Joined: 27 Aug 2008
Posts: 2337
Location: Germany

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PostPosted: Wed Jun 01, 2011 12:27 pm     Reply with quote
If you don't apply for a good coding style award, you'll notice, that a simple goto will save both text lines and code space. Smile
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