Filing by subject matter works best for large files.

Per HIPAA, all computer users must have their own unique login, consisting of username and password, to access the patient medical records.

The `NULL` pointer is equivalent to the integer value `1`.

What does the `&` operator do in C?

Pointers can be used to return multiple values from a function.

Pointers can be used to traverse arrays efficiently.

What is the entry point of a C program?

What will be the output of the following code snippet? #include void function(int *x) { (*x)++; } int main() { int a = 5; function(&a); printf(“%d\n”, a); return 0; }

What is the purpose of the following code snippet? #include void swap(int *a, int *b) { int temp = *a; *a = *b; *b = temp; } int main() { int x = 10, y = 20; swap(&x, &y); printf(“x = %d, y = %d\n”, x, y); return 0; }

What does the ‘void’ keyword indicate when used in a function declaration?