Passing Arrays to Functions

• Arrays are passed by pointer.
• This is very close to pass by reference but not exactly the same.
• Remember, a pass by value means copy everything.
• And this can be VERY expensive for large arrays.
• So in C, you were not permitted to pass arrays by value.
• Passing arrays by reference is not permitted either.
• In C++ you can pass const arrays
• Array Parameters.
  • The optional reserved work const
  • An array parameter is the type, an identifier and square brackets.
  • The size inside the square brackets is optional.
  • For higher dimension arrays, it is required for all but the first dimension
  • void PrintArray(int ary[]);
  • void PrintArray(int ary[MAX_SIZE]);
  • void PrintArray(const int ary[MAX_SIZE]);
  • void PrintArray(const int ary[]);