Question

NULL पोइन्टर किसे कहते हैं?

Answer 1

In computing, a null pointer or null reference has a value reserved for indicating that the pointer or reference does not refer to a valid object. Programs routinely use null pointers to represent conditions such as the end of a list of unknown length or the failure to perform some action; this use of null pointers can be compared to nullable types and to the Nothing value in an option type.