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void pointer behaviour ?

Hi,
I observed a strange behaviour (for me only) of void pointer. I wrote a code to access an integer through void pointer as below:

void *ptr;
int a[2] = {1,2};

ptr = (int *)&a;
ptr++; // This is giving error: Unknown Size

Why the above increment statement is giving error as i already cast the pointer to int type ?

Can anybody help me in understanding this ?

Karthik K.

Parents
  • Setting a void pointer to the address of an object does not change the pointer's type; it's still a void pointer.

    For example, if you assigned the address of a function to a void pointer and then tried to increment the pointer, what result would you expect?

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  • Setting a void pointer to the address of an object does not change the pointer's type; it's still a void pointer.

    For example, if you assigned the address of a function to a void pointer and then tried to increment the pointer, what result would you expect?

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