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type casting

Rajes
Rajes asked
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Last Modified: 2013-12-03


i don't understand internally what happen when type cast occur.
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Top Expert 2006

Commented:
Hi Rajes,

When a typecast occurs , the system treats one type of data as the casted type ..

e.g. if you say char a='A'; ... then memory location denoted by a holds a bit pattern corresponding to character 'A'

when you cast it to some other type, say int ... the same bit pattern will be interpreted as an int and not as a character ...

Sunnycoder

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Commented:

thanks for your reply.then please tell me typecasting as the basic from pointer manipulation.

Commented:
from a pointer point of view.

given any pointer ptr , ++ptr will increment the ptr by sizeof the object pointed by the pointer

if you cast it to another type , ++ptr will increment by the size of the casted type

and which in some cases can lead to some not so easily debuggable code.


--Abhijit


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