Which of the following correctly deallocates memory allocated for an array in C++?delete ptr;delete[] ptr;free(ptr);delete array ptr;

Correct statement for deallocating the array is -Options: Pick one correct answer from belowdelete [] arr;delete arr;delete *arr;delete [] *arr;

Which of the following is the correct way to dynamically allocate memory for a 2D array in C?int **arr = malloc(rows * cols * sizeof(int));int *arr = malloc(rows * sizeof(int*));int **arr = malloc(rows * sizeof(int*)); for (int i = 0; i < rows; i++) arr[i] = malloc(cols * sizeof(int));int **arr = malloc(rows * sizeof(int)); for (int i = 0; i < rows; i++) arr[i] = malloc(cols);

What is the issue with the following code snippet? #include <iostream> int main() { int* arr = new int[5]; arr[5] = 10; delete[] arr; return 0; } (2 Points) a) No issue b) Out-of-bounds array access c) Memory leak d) Missing std:: namespace

What is the purpose of the 'delete' operator in C++?To delete variables from the stackTo free dynamically allocated memoryTo remove values from an arrayTo terminate the process

In C++, which of the following statements differentiate between delete and free:The delete is an operator that de-allocates the memory dynamically while the free() is a function that destroys the memory at the runtime.The delete operator is used to delete the pointer, which is either allocated using new operator or a NULL pointer, whereas the free() function is used to delete the pointer that is either allocated using malloc(), calloc() or realloc() function or NULL pointer.When the delete operator destroys the allocated memory, then it calls the destructor of the class in C++, whereas the free() function does not call the destructor; it only frees the memory from the heap.The free() operator is faster than the delete() function.1, 2, and 32, 3, and 41, 3, and 4All of these