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I would say the above compilation fails.

Since Hello() which is an no-arg const of class hello.

But to call such a constructor we have must use this() as a first statement in

public hello(int value)
{
this();
}

Its fine .

when i correct my code as:


}


output: hello


Since i cannot concat the strings as:

title = title + "world"

where title = "hello"

why not hello world .

since i have called no-arg const hello() which has

title += "world".
 
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The first code doesn't compile because of Hello(). You can't use a constructor as a function. Only in combination with new.
The second:
First you call this() and title becomes "nullworld" and then you set title to "hello"
 
dimple bav
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OK got it.

Thank you.
 
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