invalid conversion from 'char*' to 'char' -fpermissive

Projects Programming
5

I suppose you are using this library?

  [color=red]int[/color] denda;
...
  denda = (p-20)*500;
...
  denda = (p-27)*500;
...
 char ngirim = ([color=red]char[/color]) denda;

seems really really weird

and

char ngirim = (char) denda;
...
sms.SendSMS("+6285741119138", ([color=red]ngirim[/color]));}

is definitely (one of) your problem(s) as the signature of sendSMS() is

char SendSMS(char *number_str, [color=red]char *message_str[/color]);