Simple int to String with format

Comments

• Peter Verkaik Posts: 3,956

  2006-06-30 15:43 edited 2006-06-30 15:43

  The Format class allows you to make asciiz strings.
  
  char[noparse]/noparse myString = new char[noparse][[/noparse]7]; //allow for 6 characters + closing null
  int value = -12;
  Format.sprintf(myString,"%d",value); //generates asciiz string '-','1','2',0
  
  You can also add some text if you prefer:
  Format.sprintf(myString,"value = %d",value);
  but then myString must be able to hold 15 characters.
  
  To print an asciiz string to a serial lcd use
  
  void printLcd(char[noparse]/noparse s) {
  · int i=0;
  · while (s[noparse][[/noparse]i]!=0) lcd.sendByte(s[noparse][[/noparse]i++]);
  }
  
  regards peter
• PlaneTeeR Posts: 100

  2006-06-30 16:02 edited 2006-06-30 16:02

  I used this:
  
  int value = 18;
  char[noparse]/noparse myString = new char[noparse][[/noparse]3];
  
  myLcd.write(Format.sprintf(myString,"%d",value));
  
  And on my LCD it gives a strange symbol, but not 18.
  
  Thanks
• Peter Verkaik Posts: 3,956

  2006-06-30 16:24 edited 2006-06-30 16:24

  sprintf() returns the number of bytes (excluding the closing 0) in myString.
  So use this:
  
  int value = 18;
  char[noparse]/noparse myString = new char[noparse][[/noparse]3];
  Format.sprintf(myString,"%d",value); //make string "18",0
  int i=0;
  while (myString[noparse][[/noparse]i]!=0) myLcd.writeByte(myString[noparse][[/noparse]i++]);
  
  regards peter
• PlaneTeeR Posts: 100

  2006-06-30 17:28 edited 2006-06-30 17:28

  This works fine, thanks