Question

Which of the following function calls are syntactically correct given the variables and function header below? Select all that apply.

int x=0, *ptr1;

ptr1 = &x;

void makeNegative(int *val)

		makeNegative(*ptr1);
		makeNegative(ptr1);
		makeNegative(x);
		makeNegative(&x); Which of the following statements will dynamically allocate memory for an array with 10 elements? int *ptr = int[10]; int *ptr[10]; int *ptr[10] = new int[10]; Identify all of the smart pointer types.  Select all that apply. dynamic weak unique shared Which of the following statements will free memory allocated dynamically for an array of 10 elements? delete [] ptr; delete [10] ptr; ptr = nullptr; delete ptr[10]; What mathematical operations are permitted on pointer variables? Select all that apply. addition division subtraction none multiplication int *ptr = new int[10];

Answer 1

Answer 1: makeNegative(&x);
as makeNegative() it is expecting address of the variable
Answer 2: int *ptr = new int[10];
Answer 3:weak,unique,shared
Answer 4:delete [] ptr;
Answer 5:subtraction
using that we can find the distance between 2 pointers

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