how to call the function for an array of classes c++

Question

I created a class in C++ called Commands (file name commands.cpp).

I've taken that and put it into a command array (file name test.cpp).

What I would like to know is how to call the functions that are within the Commands class.

for example I have a function within the Commands class called

     void command::init(char data[]) 
      {
        //detail
       }

and what i have tried to do to call the function is

EDIT

  Class test{
     int CmdCount;     // number of commands in the array
     int MaxCmds;      // max amount of commands allowed
     command* cmds;
  Public:
     int get_command_count() const{
          return CmdCount;
     }

     int readfile(const char fname[]){
          char line[161];

          FILE* fp;
          fp = fopen(fname, "r");

          if(fp){
               for(int i = 0; 1 == fscanf(fp, "%160[^\n]\n", line; i++){
                     cmds[get_command_count()].init(line);
                     CmdCount += 1;
               }
          }
          fclose(fp);
     }
  };

I just want to know how to be able to call void command::init(char data[]).

Any suggestions?

thanks.

What's wrong with you have? That is, cmds[get_command_count()].init(line); — Robᵩ
– Robᵩ, Commented Apr 10, 2012 at 23:30
is init a public method in class if so what you have should work as long as line is char* and cmds is populated correctly and get_command_count() returns a valid array index — keety
– keety, Commented Apr 10, 2012 at 23:33
get_command_count sounds as if it gives the total number of valid commands, in which case it's the first index which is not a valid command. — celtschk
– celtschk, Commented Apr 10, 2012 at 23:36
@Robᵩ that's the thing i believe it should be working unless I'm declaring my array wrong but it seems correct. I keep getting a segmentation fault. — SorryEh
– SorryEh, Commented Apr 10, 2012 at 23:36
@keety i tried char* but it wont work with my command class. It need's to be a char. Also, what did you mean by "populated correctly" ? thanks. — SorryEh
– SorryEh, Commented Apr 10, 2012 at 23:44

SundayMonday · Accepted Answer · 2012-04-10 23:30:27Z

1

Sounds like your array contains instances of your class. In that case you want to call the method on a single entry in the array:

my_array[i].someMethod();

where my_array[i] is an instance of your class.

answered Apr 10, 2012 at 23:30

SundayMonday

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