Difference between passing array and array pointer into function in C

Question

What is the difference between the two functions in C?

void f1(double a[]) {
   //...
}

void f2(double *a) {
   //...
}

If I were to call

Answer 1

The difference is purely syntaxic. In C, when the array notation is used for a function parameter, it is automatically transformed into a pointer declaration.