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Join Date: Dec 2007
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Posting Whiz
I have just started using C++ for the first time and I love it!!!
First problem I have encoutered proably a simple one but
Now the idea is if b is equal to 5 then it breaks out of the if loop, the for loop c, the for loop b, the for loop a.
Am I doing it right?
If not can someoone please correct me?
Thankyou, Regards X
PS: While on the topic what happens if I only wanted to break out of the if loop or if loop + for loop a or if loop + for loop a + for loop b. Thanks Again.
First problem I have encoutered proably a simple one but
for (int a=0; a<10; a++) {
for (int b=0; b<10; b++) {
for (int c=0; c<10; c++) {
if (b == 5) {
break; beak; break; break;
}
}
}
}Now the idea is if b is equal to 5 then it breaks out of the if loop, the for loop c, the for loop b, the for loop a.
Am I doing it right?
If not can someoone please correct me?
Thankyou, Regards X
PS: While on the topic what happens if I only wanted to break out of the if loop or if loop + for loop a or if loop + for loop a + for loop b. Thanks Again.
Last edited by OmniX : Jul 17th, 2008 at 10:15 am.
"You never stop learning" - OmniX
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>Now the idea is if b is equal to 5 then it breaks out of
>the if loop, the for loop c, the for loop b, the for loop a.
Nope. You can write as many breaks as you want, but only the first one will have any effect, and it'll break you out of the inner-most loop (the c loop).
>If not can someoone please correct me?
You have options here, but the best option is not to get into such a situation to begin with. If you need to break out of a nested loop, it's usually best (if you can manage it) to refactor the nested loops into a function and then use the return value to break:
>the if loop, the for loop c, the for loop b, the for loop a.
Nope. You can write as many breaks as you want, but only the first one will have any effect, and it'll break you out of the inner-most loop (the c loop).
>If not can someoone please correct me?
You have options here, but the best option is not to get into such a situation to begin with. If you need to break out of a nested loop, it's usually best (if you can manage it) to refactor the nested loops into a function and then use the return value to break:
cplusplus Syntax (Toggle Plain Text)
I'm a programmer. My attitude starts with arrogance, holds steady at condescension, and ends with hostility. Get used to it.
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Posting Whiz
That would be a good idea use of functions but I am not able to in this problem 
If i set it to a bool function then return false it will break me out completly, correct?
I require to just break out for loops a, b, c when required what would I do in that case?
Eg.
Break out of for loop a:
Break out of for loop a, b:
Break out of for loop a, b, c:
Thanks, Regards X
If i set it to a bool function then return false it will break me out completly, correct?
I require to just break out for loops a, b, c when required what would I do in that case?
Eg.
Break out of for loop a:
Break out of for loop a, b:
Break out of for loop a, b, c:
Thanks, Regards X
"You never stop learning" - OmniX
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Posting Pro in Training
Then use
goto
cplusplus Syntax (Toggle Plain Text)
Last edited by invisal : Jul 17th, 2008 at 12:07 pm.
Yesterday is a history, tomorrow is a mystery, today is a gift.
Behind every smile is a tear.
Visal .In
Behind every smile is a tear.
Visal .In
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Join Date: Dec 2007
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Posting Whiz
Thanks!!!
Very nice, so I can have multiple goto statements also?
a;
b;
c;
goto a;
goto b;
goto c;
Something like that?
Very nice, so I can have multiple goto statements also?
a;
b;
c;
goto a;
goto b;
goto c;
Something like that?
"You never stop learning" - OmniX
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Posting Pro in Training
Of course you can have multiple of them. However, try to avoid using it as much as possible since most of the time
goto can be replaced it with a loop. For some case such as break multiple-level of loops, goto is inevitable. Yesterday is a history, tomorrow is a mystery, today is a gift.
Behind every smile is a tear.
Visal .In
Behind every smile is a tear.
Visal .In
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>For some case such as break multiple-level of loops, goto is inevitable.
I wouldn't say inevitable, but goto can be the cleanest solution if you have deep nesting and can't refactor it. The alternative is to use flags and check them at each level, which is a "pure" structured solution, but it's almost always ugly as sin.
I wouldn't say inevitable, but goto can be the cleanest solution if you have deep nesting and can't refactor it. The alternative is to use flags and check them at each level, which is a "pure" structured solution, but it's almost always ugly as sin.
I'm a programmer. My attitude starts with arrogance, holds steady at condescension, and ends with hostility. Get used to it.
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