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Size of pointer

I have following code int *p,a; a=10; p=&a; printf ("size of p %d\n",sizeof (p)); printf ("size of p %d\n",sizeof (*p)); output: 8 4 so what size of pointer p should I consider 8 or 4 and also please answer why ?

5/29/2018 11:22:22 AM

Yugabdh

8 Answers

New Answer

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Int is treated as 64 bit number, so 8 bytes. Pointer to int is 4 bytes.

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But if p is treated as int then why it's size is not 8 byte

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and what size should I consider when someone is referring to address of pointer

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p is a pointer to an int, not an int. Think of it this way: you need less space to store an url than the content of the page. But some machines will have 64 bit pointers

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I got it as I'm compiling on 64 bit machine address is going to b 64 bit so sizeof (p) is address where as sizeof (*p) is size of intiger a

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But I think sololearn uses a 64 bit compiler, so i think the pointer should also be 64 bits, but thats not the case.

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If its 64 bit then memory addresses associated with variables will also be 64 bit then 8 output is correct and pointers always have size equal to intiger type anyhow.

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then your question is not answered.