[SOLVED] scroll problem lcd liquid crystal i2c

Using Arduino Programming Questions
1

Hello

Why this code write message in the row 0 when it should writes only in row 1 (The scroll loop). This happen when the message is longer than 1234567890123456789012345

Help

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2); // set the LCD address to 0x27 for a 16 chars and 2 line display

char * message = "123456789012345678901234567890";

void setup()
{
 lcd.init();
 lcd.begin (16,2);
 lcd.backlight();
 lcd.setCursor(1,0);
 lcd.print(" Good Morning");
}

void loop()
{
 for (int printStart = 15; printStart >= 0; printStart--)  //scroll on from right
 {
   showLetters(printStart, 0); 
 }

 for (int letter = 1; letter <= strlen(message); letter++)  //scroll off to left
 {
   showLetters(0, letter);
 }
}

void showLetters(int printStart, int startLetter)
{
 lcd.setCursor(printStart,1);
 for (int currentLetter = startLetter; currentLetter < strlen(message); currentLetter++)
 {
   lcd.print(message[currentLetter]);
 } 
 lcd.print(" ");
 delay(250); 
}

2

Delete my post, I dont need your help

3

I solved it myself again pff thx

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2); // set the LCD address to 0x27 for a 16 chars and 2 line display

char * message = "En la vida hay algo peor que el fracaso: el no haber intentado nada.  Franklin D. Roosvelt" ;

void setup()
{
 lcd.init();
 lcd.begin (16,2);
 lcd.backlight();
 lcd.setCursor(2,0);
 lcd.print(" Frases");
}

void loop()
{
 for (int printStart = 15; printStart >= 0; printStart--)  //scroll on from right
 {
  showLetters(printStart, 0); 
 }

 for (int letter = 1; letter <= strlen(message); letter++)  //scroll off to left
 {
   showLetters(0, letter);
 }
}

void showLetters(int printStart, int startLetter)
{
  int count = 0;
 lcd.setCursor(printStart,1);
 for (int currentLetter = startLetter; currentLetter < strlen(message); currentLetter++)
 {
      if(count <= 15){
        lcd.print(message[currentLetter]);
        count++;
      }
 } 
 lcd.print(" ");
 delay(400); 
}