How is a null pointer represented in C?
Question
How is a null pointer represented in C?
Solution
In C, a null pointer is represented by the keyword NULL.
Here's a step-by-step explanation:
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A pointer is a variable that stores the memory address of another variable.
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A null pointer is a special type of pointer that points to nowhere. It does not have a memory address assigned to it.
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In C, the null pointer is represented by the keyword NULL.
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When you declare a pointer, you can initialize it to NULL to indicate that it does not point to any memory location yet.
Here's an example:
int *ptr = NULL;
In this example, ptr is a pointer to an integer and it is initialized to NULL, meaning it does not point to any memory location yet.
Similar Questions
How is a null pointer represented in C?Marks : 1Negative Marks : 0Answer hereNULL0-11
Multi Choice Type QuestionWhat does a null pointer indicate in C?Marks : 1Negative Marks : 0Answer hereA pointer that points to a constant valueAn uninitialized pointerA pointer with a value of zero (NULL)None of the mentioned options
What is the correct way to initialize a pointer to a null value in C?Marks : 1Negative Marks : 0Answer hereint *ptr = null;int *ptr = 0;int *ptr = NULL;int *ptr = "null";
what kind of pointer Constant Pointer Pointer to Pointer NULL Pointer Void Pointer
What happens if a NULL pointer is dereferenced in C?Marks : 1Negative Marks : 0Answer hereIt will point to a different variableIt will cause a runtime error or crashIt will return 0It will allocate new memory
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