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
Question
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
Solution
To prevent creating dangling pointers, you should always set pointers to NULL after the memory they were pointing to is deallocated. This is because a dangling pointer is a pointer that doesn't point to a valid object and can cause a program to crash or behave unpredictably. By setting the pointer to NULL, you ensure that it doesn't point to an invalid location.
Avoiding the use of pointers altogether is not a practical solution because pointers are a fundamental part of many programming languages and are necessary for certain tasks.
Assigning pointers to the addresses of global variables is also not a good solution because it can lead to other problems, such as unexpected changes in the value of the global variable.
Therefore, the best option among the ones mentioned is to always set pointers to NULL after memory is deallocated.
Similar Questions
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.
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()
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
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
Which of the following statements about dangling pointers is true?
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