What happens when delete is used for a NULL pointer? int *ptr = NULL; – McqOptions

MCQOPTIONS

1.	What happens when delete is used for a NULL pointer? int *ptr = NULL; delete ptr;
A.	compile time error
B.	run time error
C.	no effect
Answer» D.

Discussion

No Comment Found

Related MCQs

#include using namespace std; class X { public: int x; }; int main() { X a = {10}; X b = a; cout
#include using namespace std; class Point { public: Point() { cout
Output of following program? #include using namespace std; class Point { Point() { cout
When a copy constructor may be called?
Which of the followings is/are automatically added to every class, if we do not write our own.
Is it fine to call delete twice for a pointer? #include using namespace std; int main() { int *ptr = new int; delete ptr; delete ptr; return 0; }
What happens when delete is used for a NULL pointer? int *ptr = NULL; delete ptr;
Predict the output? #include using namespace std; class Test { int x; Test() { x = 5;} }; int main() { Test *t = new Test; cout
Which of the following is true about new when compared with malloc. 1) new is an operator, malloc is a function 2) new calls constructor, malloc doesn't 3) new returns appropriate pointer, malloc returns void * and pointer needs to typecast to appropriate type.
Which of the following is true about the following program #include class Test { public: int i; void get(); }; void Test::get() { std::cout i; } Test t; // Global object int main() { Test t; // local object t.get(); std::cout