Sunday 4 July 2010

What is wild pointer in c?

Explanation:
A pointer in c which has not been initialized is known as wild pointer.
Example:
What will be output of following c program?
int main()
{
int *ptr;
printf("%u\n",ptr);
printf("%d",*ptr);
return 0;
}
Output: Any address
Garbage value
Here ptr is wild pointer because it has not been initialized. There is difference between the NULL pointer and wild pointer. Null pointer points the base address of segment while wild pointer doesn’t point any specific memory location.

You may like the following posts:
Pointers
Example program on Dangling pointer

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