The exercise says that last name is an array of pointers to char (char *) and each position contains the memory address of last names.
When I declare the data received in the function, I should write char * last names? (which would contain the addresses) or * int last names? I suppose it should be with char Probably the question is silly, but I'm not sure whether to declare it that way or not.
I mean declare it like this
select void (int * statures, char * surnames);
The prototype you propose is the correct one. The type of data that the array will store will be of type (char *) . This said in other words is that each memory section represented by the index of the array will store the address to an element of type char .
Assuming that the last name to be saved is "Ramirez" , and the letter 'R' is stored in the address 0x0A0A05 , and this corresponds to the first element (0) of the array, then the array will contain the following:
apellidos[0] == 0x0A0A05