What is pure virtual function? C++

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A class is made abstract by declaring one or more of its virtual functions to be pure. A pure virtual function is one with an initializer of = 0 in its declaration

2012-01-19, 3027👍, 0💬

How do you traverse a Btree in Backward in-order?
How do you traverse a Btree in Backward in-order? Process the node in the right subtree Process the root Process the node in the left subtree 2012-01-20, 3028👍, 0💬

What is pure virtual function? C++
What is pure virtual function? C++ A class is made abstract by declaring one or more of its virtual functions to be pure. A pure virtual function is one with an initializer of = 0 in its declaration 2012-01-19, 3028👍, 0💬

What is the two main roles of Operating System?
What is the two main roles of Operating System? As a resource manager As a virtual machine 2012-01-23, 2970👍, 0💬

What is Boyce Codd Normal form? C++
What is Boyce Codd Normal form? C++ A relation schema R is in BCNF with respect to a set F of functional dependencies if for all functional dependencies in F+ of the form a->b, where a and b is a subset of R, at least one of the following holds: * a->b is a trivial functional dependenc... 2012-01-19, 2968👍, 0💬

In the derived class, which data member of the base class are visible?
In the derived class, which data member of the base class are visible? In the public and protected sections. 2012-01-23, 2910👍, 0💬

How do you write a function that can reverse a linked-list?
How do you write a function that can reverse a linked-list? Answer1: void reverselist(void) { if(head==0) return; if(head-<next==0) return; if(head-<next==tail) { head-<next = 0; tail-<next = head; } else { node* pre = head; node* cur = head-<next; node* curnext = ... 2012-01-17, 2873👍, 0💬

What is polymorphism? C++
What is polymorphism? C++ Polymorphism is the idea that a base class can be inherited by several classes. A base class pointer can point to its child class and a base class array can store different child class objects. 2012-01-17, 2868👍, 0💬

Write a Struct Time where integer m, h, s are its members
Write a Struct Time where integer m, h, s are its members struct Time { int m; int h; int s; }; 2012-01-20, 2811👍, 0💬

How do you find out if a linked-list has an end? (i.e. the list is not a cycle)
How do you find out if a linked-list has an end? (i.e. the list is not a cycle) You can find out by using 2 pointers. One of them goes 2 nodes each time. The second one goes at 1 nodes each time. If there is a cycle, the one that goes 2 nodes each time will eventually meet the one that goes slower. ... 2012-01-24, 2803👍, 0💬

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