32 bit. app
1) The addresses are limited to 32 bit(can be more in some cases). The address space is limited to this value.
2) It will run on both 32 bit OS and 64 bit OS(64 bit OS can run 32 bit apps)
3) A pointer is of 4 bytes.
4) some other differences wrt to other data types
64bit app:
1) the address are limited to 2^64 ( theoretically)
2) It will run only on 64 bit OS
3) A pointer is of 64 bits(8 bytes)
1) The addresses are limited to 32 bit(can be more in some cases). The address space is limited to this value.
2) It will run on both 32 bit OS and 64 bit OS(64 bit OS can run 32 bit apps)
3) A pointer is of 4 bytes.
4) some other differences wrt to other data types
64bit app:
1) the address are limited to 2^64 ( theoretically)
2) It will run only on 64 bit OS
3) A pointer is of 64 bits(8 bytes)
BTW, Integer is always 4 bytes.
2 byte integers are history. Very few people use turbo C compiler nowadays.
gcc is the way to go.
-Sri
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SK Malik
On Mon, Sep 29, 2008 at 12:42 PM, nidhi mittal <nidhimittal19@xxxxxxxxx> wrote:
Hi all
its a very basic ques may be for many of you .but i have this confusion from long that is.
when we say this application is 32 bit application or 64 bit what do we mean by that
is it processor which is 32 bit or 64 bit
or the OS which is is 32 bit or 64 bit
or what ?
2. Does it have some relation that in windows in C language int size is 2 bytes in linux gcc it is 4 bytes
i mean any relation of word size with it ??
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Thanks & Regards
Nidhi
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SK Malik
