List of top Computer Science Questions on Pointers and Arrays

What will be the output of the following C code?

# include <stdio.h>
int main()
{ int arr[5] = {1, 2, 3, 4, 5};
 int *ptr = arr;
  *(ptr + 2) = *(ptr + 4) + *(ptr + 1);
  printf("%d\n", arr[2]);
  return 0; }

What is the output of the following C code?

#include <stdio.h>
void func(int arr[]) {
 sizeof(arr) == sizeof(int) * 5 ? printf("True\n") : printf("False\n");
}
int main() {
  int arr[5] = {0};
  func(arr);
  return 0;
}

The pointer that points to a memory location that has been already deallocated is known as: