4 int prompt_value(const char* msg
, int* result
);
5 int* prompt_array(int array
[], unsigned* size
);
6 void handle_prompt_error(int errno
);
8 void display_choice_menu();
10 int* do_concat(int array
[], unsigned* size
);
11 void do_sort(int array
[], unsigned size
);
12 void do_count(int array
[], unsigned size
);
13 void do_resize(int array
[], unsigned* size
);
15 void display_array(int array
[], unsigned size
);