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What else can I help you with?
What to do with two egg yoks?
break the egg
What the first of these two egg or chicken?
The chicken
What came beforethe chicken or the egg?
The chicken came before the egg through evolution. The chicken could have been born through an egg, or the same way humans are born. The first chicken was born from two parents that were NOT chickens. The offspring of the two parents had a mutation which led to the first chicken.
How many quail eggs equal one chicken egg?
5 quail eggs is the same as one chicken egg
How many small chicken eggs equals 1 large chicken egg?
Normally, It'd be two.
Which comes first in alphabetically egg or chicken?
The egg came first... kind of. Basically, a long, long time ago two birds that weren't really chickens created the first chicken egg.
How many chickens does it take to lay an egg?
One. Two if you want the egg to be fertilised and produce a chicken.
What can cause a chicken to lay a bloody egg shell then die shorty after laying the egg the hen has a very bloody vent area?
Egg Peritonitis and Salmonella are the two diseases that can cause a chicken to lay a bloody egg shell.
Why is it that no one can answer which came first the chicken or the egg?
Maybe you aren't asking the right people! I for one can answer this question! The egg came first, as two birds (just say an ostrich and an emu?) could have mated and the emu could have laid an egg which made a chicken! The egg came before the chicken, now you know the answer too!
What cames first egg or chicken?
The egg comes first. I know most of you think that without a chicken, there is no egg. But without an egg,there is no chicken as well right? And besides, God didn't make chicken just like that, so it may be possible that two different bird came about with a chicken egg. What do you guys think?
What is the record for a chicken egg?
It contained 8 malformed chickens, two pairs of which were siameeze!
What do you mean by forward declarations of a class in c plus plus?
Which came first, the chicken or the egg? The answer is, of course, the egg. After all, birds evolved long after egg-laying reptiles, so eggs had to have come first. But what exactly does that have to do with forward declarations? Well, everything, as it turns out. Forward declarations are essential whenever two classes depend on each other.As you know, in C++ you must define a type before you can use it. So let's define a simple chicken and egg:#include class Chicken{public:Chicken(Chicken* parent=0):m_pParent(parent){}Egg* lay_egg();private:Chicken* m_pParent;};class Egg{public:Egg(Chicken* parent=0): m_pParent(parent){}Chicken* hatch();private:Chicken* m_pParent;};Egg* Chicken::lay_egg(){return(new Egg(this));}Chicken* Egg::hatch(){return(new Chicken(m_pParent));}int main(){Chicken chicken;Egg* egg = chicken.lay_egg();Chicken* chick = egg->hatch();Egg* egg2 = chick->lay_egg();delete(egg2);egg2=0;delete(chick);chick=0;delete(egg);egg=0;return(0);}Straight away there's a problem. The compiler won't allow this because our chicken lays eggs but the definition of an egg appears after the definition of a chicken. Ah, but of course -- eggs came first! So let's swap the definitions around:#include class Egg{public:Egg(Chicken* parent=0): m_pParent(parent){}Chicken* hatch();private:Chicken* m_pParent;};class Chicken{public:Chicken(Chicken* parent=0):m_pParent(parent){}Egg* lay_egg();private:Chicken* m_pParent;};Egg* Chicken::lay_egg(){return(new Egg(this));}Chicken* Egg::hatch(){return(new Chicken(m_pParent));}int main(){Chicken chicken;Egg* egg = chicken.lay_egg();Chicken* chick = egg->hatch();Egg* egg2 = chick->lay_egg();delete(egg2);egg2=0;delete(chick);chick=0;delete(egg);egg=0;return(0);}Hmm. The compiler's still not happy. Our eggs need to hatch chickens but, again, the definition of a chicken now appears after the definition of an egg. We seem to have a catch-22 situation. No matter which order we define them, we simply cannot emulate a simple chicken and an egg.The answer is, you guessed it, to use a forward declaration:#include class Chicken; // forward declaration!class Egg{public:Egg(Chicken* parent=0): m_pParent(parent){}Chicken* hatch();private:Chicken* m_pParent;};class Chicken{public:Chicken(Chicken* parent=0):m_pParent(parent){}Egg* lay_egg();private:Chicken* m_pParent;};Egg* Chicken::lay_egg(){return(new Egg(this));}Chicken* Egg::hatch(){return(new Chicken(m_pParent));}int main(){Chicken chicken;Egg* egg = chicken.lay_egg();Chicken* chick = egg->hatch();Egg* egg2 = chick->lay_egg();delete(egg2);egg2=0;delete(chick);chick=0;delete(egg);egg=0;return(0);}Now the code compiles!The forward declaration simply acts as a sort of place-holder. We're just telling the compiler that although we aren't quite ready to define a chicken, one will be defined at some point -- it may even be in a completely different file. But that is enough to appease the compiler, it can simply fill in the blanks when our chicken is fully defined.This type of scenario crops up quite a lot, especially when working with parent and child classes that must depend on each other, just like our chicken and egg. However, we normally design our classes using separate source files each with their own header file, and that would then make it impossible for our chicken and egg header's to include each other's header. Instead, we must use forward declarations in the headers, and place the corresponding #include directives in the source files.
