Data Structures - what is the size of a void pointer ?

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what is the size of a void pointer ?

Total Answers and Comments: 7

Last Update: March 11, 2008 Asked by: anupam verma

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Submitted by: manishmodgil

The size of any pointer variable is same. ( 2 byte in case of 32 bit machine ).

The type of pointer defines the type of data the pointer is pointing to .

eg. if the pointer is definde as

int *p;

then it will create a pointer p ( of two bytes ) which is pointing to a data of type int ( again of 2 byte ) .

If we create

float *pf;

it will create a pointer ( again of 2 bytes ) but pointing to a float ( of 4 byte ).

The difference makes sense when we try to read or move to the next block etc.

suppose we created a char type pointer to an int then while reading, it will just read the first byte leaving the second byte of int thus giving us wrong output.

Above answer was rated as good by the following members:
aman15490

December 06, 2006 07:02:19

digitalgenius

Member Since: December 2006 Contribution: 2

RE: what is the size of a void pointer ?

Size if a void pointer is equal to the size of a char pointer. Even though they point to the data types of different sizes!!!

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January 27, 2007 21:38:59

vishnu

RE: what is the size of a void pointer ?

All pointers are of the same size. The size of which depends on the machine - 64/32 bits

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February 06, 2007 06:23:11

sivanesh.a

Member Since: December 2006 Contribution: 189

RE: what is the size of a void pointer ?

All pointers are of size 2 bytes...(in turbo C)..

Is this answer useful? Yes | No

February 21, 2007 23:07:32

Ankit Bandyopadhyay

what is the size of a void pointer ?

Actually size of a pointer is fixed it is 1word.Now 1 word is defined in dos as 2 bytes but in windows it is 4 bytes.

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July 26, 2007 03:41:38

Ashwan

RE: what is the size of a void pointer ?

2 Bytes

Is this answer useful? Yes | No

December 28, 2007 05:34:02

manishmodgil

Member Since: July 2006 Contribution: 15

RE: what is the size of a void pointer ?

The size of any pointer variable is same. ( 2 byte in case of 32 bit machine ).

The type of pointer defines the type of data the pointer is pointing to .

eg. if the pointer is definde as

int *p;

then it will create a pointer p ( of two bytes ) which is pointing to a data of type int ( again of 2 byte ) .

If we create

float *pf;

it will create a pointer ( again of 2 bytes ) but pointing to a float ( of 4 byte ).

The difference makes sense when we try to read or move to the next block etc.

suppose we created a char type pointer to an int then while reading it will just read the first byte leaving the second byte of int thus giving us wrong output.

Is this answer useful? Yes | No

1 0

Overall Rating: +1

March 11, 2008 10:02:54

as_hmr

Member Since: April 2007 Contribution: 3

RE: what is the size of a void pointer ?

Yes pointer size is always that of size of word on a particular architecture.

Actually pointer only contains starting address of a data type there after how many bytes we have to read (e.g. 1 for char 2 for int) depends upon type of pointer declared.

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