please explain any work show

/ /You can modify your header file up to your compiler #include #include #include using namespace std; / /Functions that you need to create void fill(int, int); double mean(int, int); double rms (int, int); double stddev(int, int, int Ave); void print(int, int); int main( ) const int SIZE = 100; int X[SIZE]; double Ave; fill(X, SIZE); Ave = mean(X, SIZE); cout