Question

Which of these function correctly defines the function g(), which should return a pointer to a dynamically allocated array?

a. int g(int size) { int *ptr = new int [size]; return *ptr;}

b. int* g (int size) { int data [size]; int *ptr =data; return ptr;}

c. int* g(int size) { int *ptr = new int[size]; return ptr;}

d.int g(int size { int *ptr = new int [size]; return ptr;}

e. int g (int size) { int data[size]; int *ptr =data; return *ptr;}

Which of the following dynamically decals an array length 20?

a.int x = 20; int* dPtr = data;

b.int data[20]; int* dPtr =data;

c.int* dPtr =new int(20);

d. int* dPtr =new int[20];

e, int* dPtr = new int;

Answer 1

Answer:

1) The correct answer should be c)

Explanation:

ptr is the name.of the pointer and its type is int *

So.the return type of the function should be int *

And the return statement should return ptr. So a and d are wrong.

B is also wrong as the array is not dynamically allocated in B

2) The answer is d

Explanation:

Dynamic allocation is done using.new keyword and size should be defined in square brackets and not in parantheses.

That's why other options are incorrect and d is correct .

PLEASE UPVOTE IF YOU FOUND THIS HELPFUL!