C Programming - MCQ Practice Questions

What is the size of a pointer in a 64-bit system?

How does free() handle a NULL pointer?

What is the result of: int x = 5; int *p = &x; int *q = p; if p == q?

What happens with: int arr[10]; int *p = arr; *p = 5; printf("%d", arr[0]);?

What is the output of the following code? int x = 10; int *p = &x; int q = &p; printf("%d", q);

Consider the declaration: const int *p; and int * const q; Which statement is TRUE?

What is the primary issue with this code? int *p; *p = 10;