What is the result of dereferencing a dangling pointer?Marks : 1Negative Marks : 0Answer hereThe program crashes.The pointer is set to NULL.The value at the memory location it points to.A compilation error.
Question
What is the result of dereferencing a dangling pointer?Marks : 1Negative Marks : 0Answer hereThe program crashes.The pointer is set to NULL.The value at the memory location it points to.A compilation error.
Solution
The result of dereferencing a dangling pointer is typically undefined behavior. This is because a dangling pointer points to a memory location that has been freed or deleted, or to a block of memory that is not allocated.
In some cases, the program may crash if the operating system detects that the program is trying to access memory that it doesn't have permission to access. In other cases, the program may continue to run, but it will produce incorrect results or behave unpredictably, because the memory location that the dangling pointer points to may have been
Similar Questions
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
Which of the following scenarios can lead to a dangling pointer?Marks : 1Negative Marks : 0Answer hereReturning a pointer to a local variable from a functionUsing malloc() for memory allocationAssigning a pointer to another pointerDeclaring a pointer inside main()
Which of the following is not a consequence of using a dangling pointer?Marks : 1Negative Marks : 0Answer hereMemory leakSystem crashSegmentation faultNone of the mentioned options
In which case does a pointer become a dangling pointer?Marks : 1Negative Marks : 0Answer hereWhen it is declaredWhen it is used to allocate memoryWhen the memory it points to is reallocatedWhen the memory it points to is deallocatedClearNext
How can you prevent creating dangling pointers?Marks : 1Negative Marks : 0Answer hereAvoid using pointers altogether.Always set pointers to NULL after memory is deallocated.Always assign pointers to the addresses of global variables.None of the mentioned options
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