C Programming - Pointers - Discussion
Discussion Forum : Pointers - General Questions (Q.No. 1)
1.
What is (void*)0?
Discussion:
124 comments Page 1 of 13.
Paste said:
2 decades ago
Please explain.
Abhishek Anand said:
2 decades ago
Can Anybody, explain this Please
JEHO said:
1 decade ago
Void is used in 2 places.
1st void function_name (void).
1st void indicate functio type is null.
Eg int main, char main.
2nd (void) indicate no parameters in function.
3rd function of void is NULL POINTER.
NULL POINTER SYNTAX IS (VOID*).
1st void function_name (void).
1st void indicate functio type is null.
Eg int main, char main.
2nd (void) indicate no parameters in function.
3rd function of void is NULL POINTER.
NULL POINTER SYNTAX IS (VOID*).
Sree said:
1 decade ago
The void data type has no values.
Example:
int a=10; //right
void b=20;//wrong
pointer
a[address of 10]--------->10
pointer
b[address]---------> NULL (no value,no address so null)
So void is a representation of NULL.
Note: void *b; //right (no value, but we can store address)
Example:
int a=10; //right
void b=20;//wrong
pointer
a[address of 10]--------->10
pointer
b[address]---------> NULL (no value,no address so null)
So void is a representation of NULL.
Note: void *b; //right (no value, but we can store address)
Arpan said:
1 decade ago
I think it is void pointer!!!
I null pointer is something which refers to a memory block which already has been deallocated (by free() or something like that).
I null pointer is something which refers to a memory block which already has been deallocated (by free() or something like that).
Anil said:
1 decade ago
This is nothing but here, we are pointing to a void memory.
Srivibha said:
1 decade ago
What is the difference between void pointer and NULL pointer?
Praveen kumar said:
1 decade ago
I dont know anybody give full explanation
Tasneem said:
1 decade ago
Can anybody explain it properly?
Yogeshwaran said:
1 decade ago
I don't know give any one for correct information.
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