Answer Posted / shyamal bose

Memory leaks happens for the memory allocated on Heap(ex A
*temp = new A()) . memory allocated by us on stack (int a)
is released automatically when the function returns or
module goes out of scope.

But memory allocated on heap will not be freed
automatically, we need to release it manually.

ex:

func()
{
A *a = new A(); //on heap
int b; // on stack
}

main()
{
func();
}

Now in above example when func is called memory for "a" is
created on HEAP by using NEW, but it is not freed by using
DELETE, hence is memory leak. On the other hand "b" is
created on STACK & freed automatically. so correct
implementation is:
func()
{
A *a = new A(); //on heap
int b; // on stack
delete a; //deleting memory on heap
}

main()
{
func();
}

Get me an image implementation program.

1565

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class type to basic type conversion

1845

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#include #include #include #include void insert(struct btreenode **, int); void inorder(struct btreenode *); struct btreenode { struct btreenode *leftchild; struct btreenode *rightchild; int data; }; main() { struct btreenode *bt; bt=(struct btreenode *)NULL; int req,i=1,num; clrscr(); printf("Enter number of nodes"); scanf("%d",&req); while(i<=req) { printf("Enter element"); scanf("%d",&num); insert(&bt,num); i++; } inorder(bt); } void insert(struct btreenode **sr, int num) { if(*sr==NULL) { *sr=(struct btreenode *)malloc (sizeof(struct btreenode)); (*sr)->leftchild=(struct btreenode *)NULL; (*sr)->rightchild=(struct btreenode *)NULL; (*sr)->data=num; return; } else { if(num < (*sr)->data) insert(&(*sr)->leftchild,num); else insert(&(*sr)->rightchild,num); } return; } void inorder(struct btreenode *sr) { if(sr!=(struct btreenode *)NULL) { inorder(sr->leftchild); printf("\n %d",sr->data); inorder(sr->rightchild); } else return; } please Modify the given program and add two methods for post order and pre order traversals.

3263

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Why can't we have instance(stack) of a class as a member of the same class like eg.Class A{A obj;} as we can have self refential pointer

1627

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Is enum a class?

611

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Why polymorphism is used in oops?

590

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write a code for this:trailer recordId contains a value other than 99, then the file must error with the reason ‘Invalid RECORD_ID’(User Defined Exception).

1647

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What is protected in oop?

609

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There are two base class B1,B2 and there is one class D which is derived from both classes, Explain the flow of calling constructors and destructors when an object of derived class is instantiated.

1464

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What is debug class?what is trace class? What differences are between them? With examples.

1614

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What does I oop mean?

618

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What is encapsulation in oop?

613

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What is persistence in oop?

677

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Can we have inheritance without polymorphism?

621

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What is object in oop with example?

711

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