Pass the array to the function, and the array type is automatically converted to the pointer type, so the actual address is passed.

void func(int array[ 10])

void func(int array[])

void func(int *array)

So the above three function declarations are completely equivalent.

In fact, arrays as parameters cannot be passed by values at all. This is determined by the implementation mechanism of C/C++ function.

The next question is: Why must we pass by value? When you want to use an array in a function, just pass in a pointer. As long as we can access the data we want and operate it, why go into a dead end?