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I'm about identify myself stupid, howcome I couldn' t figure out how to split a string into substring using arduino, even after 10 days of searching. The number is fact... So, As Mr.Arduino.cc says: string.substring() is just can be used as conditional phrase with loops like if. and there is no method such strtok() like in C can help me with this. So guys, I' m bagging you for help, please!

if (ks > 255 * 60)
            {
                    vek.print("Bu yazı, ", 25, 0);
                    vek.printNumI(255*60, 25, 8);
                    vek.print("karakterd-", 25, 16);
                    vek.print("en uzun ol", 25, 24);
                    vek.print("dugundan", 25, 32);
                    vek.print("gosterlemz", 25, 40);
            }

for (byte i = 0; i <= ss ; i ++)
            {
                    for (byte j = 0; j <= 6; j++)
                    {
                            int ilk_kar = j * 10 + i * 60;
                            int son_kar = ilk_kar + 10;

                            String yaz=readString.strtok(ilk_kar,son_kar);

                            vek.print(yaz, 25, j);

                            if (analogRead(A5) == 1023)
                            {
                                    continue;
                            }
                            else
                            {
                                    break;
                            }
                    }
            }
    }
}

Error: sketch_aug22a.ino: In function ‘void loop()’: sketch_aug22a.ino:83:56: error: ‘class String’ has no member named ‘strtok’

What am I supposed to do?

Thanks, already...

9
  • Do you want to split the string on a particular character or position?
    – st2000
    Aug 21, 2016 at 19:53
  • 1
    You can use strtok(). It's not part of the Arduino core library: it's just a libc function. Aug 21, 2016 at 20:02
  • And, how am I supposed to find that libc (I guess a library) thing?
    – Konko
    Aug 21, 2016 at 20:45
  • Mr.Bonet, pls, I need this answer...
    – Konko
    Aug 21, 2016 at 20:49
  • It would help to have the above questions answered. Do you want to split at a certain spot (eg. 5th character)? Or after certain symbols (eg. a comma)?
    – Nick Gammon
    Aug 21, 2016 at 20:52

1 Answer 1

1

Import the string.h library by adding #include <string.h> on top of your sketch, in order to use the strtok() function. Checkout the usage example of strtok() here: http://www.cplusplus.com/reference/cstring/strtok/?kw=strtok

2
  • in arduino ide?
    – Konko
    Aug 22, 2016 at 9:49
  • Yes, of course.
    – Dmitri
    Aug 22, 2016 at 11:07

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