What happens when a pointer is deleted twice.
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Explain what happens when a pointer is deleted twice. In fact all four answers basically say the same thing. It can cause an error. Which classes allow primitive types to be accessed as objects.
If set to null it wont have much affect if deleted twice.
When you delete the pointer for the first time you are relinquishing your ownership and the memory will be going back to the free pool getting ready to be given out again. Unfortunately these symptoms can appear and disappear randomly. So next time be aware. If you delete a pointer and set it to NULL it it possibly cannot have an adverse effect. When you delete the pointer for the first time you are relinquishing your ownership and the memory will be going back to the free pool getting ready to be given out again.
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It might depending on the phase of the moon corrupt your heap crash your program make arbitrary and bizarre changes to objects that are already out there on the heap etc. So next time be aware. What happens when a pointer is deleted twice. A pointer if not nullified and deleted twice leads to a trap. More crucially you must pay attention to the can in the multiple choice answers because there is no guarantee that anything will happen when you double-delete an object.
If you delete it for the second time that memory might be used by any other program now and when they try to access it it will crash.
It can cause a failure. When you delete the pointer for the first time you are relinquishing your ownership and the memory will be going back to the free pool getting ready to be given out again. Hope this is helpful. The standard does not say what happens to the value of the pointer.
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Which looping process checks the test condition at the end of the loop. It can abort the program 2 b. No it isnt safe to delete the same pointer twice. I know that a deleting the same memory twice error can happen when two pointers address the same dynamically allocated object.
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In that case the 2nd delete would most probably delete some needed data or even not needed - depends on program contex. That second delete p line might do some really bad things to you. It can cause a failure 3 c. Visit this link Is it safe to delete the same pointer twice.
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Which classes allow primitive types to be accessed as objects. Not to be confused with SNMP. If set to null it wont have much affect if deleted twice. So the behaviour and possible program damage is highly dependent on progam state random circumstances perhaps on compiler whether the pointer after first delete was set to NULL - simply on many random assumptions.
It can cause a failure. It can cause a trap. Which looping process checks the test condition at the end of the loop. In fact all four answers basically say the same thing.
It can cause a failure.
Unfortunately these symptoms can appear and disappear randomly. It can cause a trap. It is undefined behaviour according to C standard. Not to be confused with SNMP. What happens when a pointer is deleted twice.
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The quiz seems confused anyway since deleting a pointer is likely not what it means. Explain what happens when a pointer is deleted twice. It depends on what the delete operation is actually doing but very few memory allocators behave well when the same piece of memory is freed twice. It can cause a failure. Not to be confused with SNMP.
It can cause an error 4 d. So the behaviour and possible program damage is highly dependent on progam state random circumstances perhaps on compiler whether the pointer after first delete was set to NULL - simply on many random assumptions. Which of the following members do get inherited but become private members in child class. It can cause a failure.
Explain what happens when a pointer is deleted twice.
Which classes allow primitive types to be accessed as objects. All it says is that you are no longer allowed to use that value until you assign your pointer a valid value. It can cause a failure. In fact all four answers basically say the same thing.
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If set to null it wont have much affect if deleted twice. Hope this is helpful. The standard does not say what happens to the value of the pointer. The quiz seems confused anyway since deleting a pointer is likely not what it means.
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It can cause a failure 3 c. Unfortunately these symptoms can appear and disappear randomly. It can abort the program. Which looping process checks the test condition at the end of the loop.
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That second delete p line might do some really bad things to you. In that case the 2nd delete would most probably delete some needed data or even not needed - depends on program contex. The standard does not say what happens to the value of the pointer. If we subsequently delete the second pointer then the free store may be corrupted.
It might depending on the phase of the moon corrupt your heap crash your program make arbitrary and bizarre changes to objects that are already out there on the heap etc.
It can cause a trap. That second delete p line might do some really bad things to you. If delete is applied to one of the pointers then the objects memory is returned to the free store. All it says is that you are no longer allowed to use that value until you assign your pointer a valid value. It might depending on the phase of the moon corrupt your heap crash your program make arbitrary and bizarre changes to objects that are already out there on the heap etc.
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If set to null it wont have much affect if deleted twice. The FBI CIA and the military comes to your house via dragon and breaths fire onto your soul sending you to hell for eternity to burn simply because you deleted a pointer twice. Visit this link Is it safe to delete the same pointer twice. If we subsequently delete the second pointer then the free store may be corrupted. It can cause an error 4 d.
So the behaviour and possible program damage is highly dependent on progam state random circumstances perhaps on compiler whether the pointer after first delete was set to NULL - simply on many random assumptions.
It can cause a trap 5 NULL. Unfortunately these symptoms can appear and disappear randomly. When you delete the pointer for the first time you are relinquishing your ownership and the memory will be going back to the free pool getting ready to be given out again. More crucially you must pay attention to the can in the multiple choice answers because there is no guarantee that anything will happen when you double-delete an object.
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This state of the pointer is called dangling. In that case the 2nd delete would most probably delete some needed data or even not needed - depends on program contex. A pointer if not nullified and deleted twice leads to a trap. It can abort the program.
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Explain what happens when a pointer is deleted twice. Which of the following members do get inherited but become private members in child class. In that case the 2nd delete would most probably delete some needed data or even not needed - depends on program contex. It might depending on the phase of the moon corrupt your heap crash your program make arbitrary and bizarre changes to objects that are already out there on the heap etc.
Source: slideshare.net
It can cause an error. Which looping process checks the test condition at the end of the loop. Which of the following members do get inherited but become private members in child class. It might depending on the phase of the moon corrupt your heap crash your program make arbitrary and bizarre changes to objects that are already out there on the heap etc.
This state of the pointer is called dangling.
That second delete p line might do some really bad things to you. Unfortunately these symptoms can appear and disappear randomly. It can cause a trap 5 NULL. It can cause a trap. Explain what happens when a pointer is deleted twice.
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It can cause an error. The FBI CIA and the military comes to your house via dragon and breaths fire onto your soul sending you to hell for eternity to burn simply because you deleted a pointer twice. Explain what happens when a pointer is deleted twice. I know that a deleting the same memory twice error can happen when two pointers address the same dynamically allocated object. From the C FAQ.
However if a pointer is deleted an not nullified then it can cause a trap.
From the C FAQ. If you delete a pointer and set it to NULL it it possibly cannot have an adverse effect. If you delete it for the second time that memory might be used by any other program now and when they try to access it it will crash. It is undefined behaviour according to C standard.
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Not to be confused with SNMP. Visit this link Is it safe to delete the same pointer twice. Unfortunately these symptoms can appear and disappear randomly. It can cause an error. If you delete it for the second time that memory might be used by any other program now and when they try to access it it will crash.
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It depends on what the delete operation is actually doing but very few memory allocators behave well when the same piece of memory is freed twice. Explain what happens when a pointer is deleted twice. That second delete p line might do some really bad things to you. The FBI CIA and the military comes to your house via dragon and breaths fire onto your soul sending you to hell for eternity to burn simply because you deleted a pointer twice. This state of the pointer is called dangling.
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Not to be confused with SNMP. It is undefined behaviour according to C standard. If we subsequently delete the second pointer then the free store may be corrupted. If you delete a pointer and set it to NULL it it possibly cannot have an adverse effect. It can cause a failure 3 c.
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