if(display==1){ 
                     size1=sizeof(x0);//calcaulate size of txt
                     show_message(x0);
                    }

sbit LCD_RS at RD1_bit;
sbit LCD_EN at RD0_bit;
sbit LCD_D4 at RD4_bit;
sbit LCD_D5 at RD5_bit;
sbit LCD_D6 at RD6_bit;
sbit LCD_D7 at RD7_bit;

sbit LCD_RS_Direction at TRISD1_bit;
sbit LCD_EN_Direction at TRISD0_bit;
sbit LCD_D4_Direction at TRISD4_bit;
sbit LCD_D5_Direction at TRISD5_bit;
sbit LCD_D6_Direction at TRISD6_bit;
sbit LCD_D7_Direction at TRISD7_bit;
/// Configuration de LCD

bit P1,P2,P3,P4;

unsigned char y=0,size1,i, count;
char text_lcd[17];
const char *x;
const char start_message[]="                press any switch                ";
const char x0[] = "                MESSAGE NUMBER ONE IS HERE ... (O_O)                ";
const char x1[] = "                MESSAGE NUMBER TWO IS HERE ... (O_O)                ";
void show_message(const char *text);
void main()
{
//option_reg.b7=0;
TRISB=0XFF;     // initialisation du port B en entrée
ADCON1=0X06;
cmcon=7;
 Lcd_Init();
 lcd_cmd(_LCD_CURSOR_OFF);
 Lcd_Cmd(1);
 x=start_message;
 size1=sizeof(start_message);
while(1)
     {

      if(RB0_bit==0)  {x=x0;y=0;delay_ms(250); size1=sizeof(x0);}//calcaulate size of txt
      if(RB1_bit==0)  {x=x1;y=0;delay_ms(250) ;size1=sizeof(x1);}//calcaulate size of txt

       show_message(x);

     }
}



void show_message(const char *text)
{
  for(i=0;i<17;i++)
                  {
                    if(i==16){text_lcd[16]=0;break;}
                    else text_lcd[i]=text[i+y];
                  }

 lcd_out(1,1,text_lcd);

 count++;
 delay_ms(10);

 if(count==10)// to reducing time
                               {
                                y++;
                                if(y==(size1-15))y=0;
                                count=0;
                               }

}

sbit LCD_RS at RD1_bit;
sbit LCD_EN at RD0_bit;
sbit LCD_D4 at RD4_bit;
sbit LCD_D5 at RD5_bit;
sbit LCD_D6 at RD6_bit;
sbit LCD_D7 at RD7_bit;

sbit LCD_RS_Direction at TRISD1_bit;
sbit LCD_EN_Direction at TRISD0_bit;
sbit LCD_D4_Direction at TRISD4_bit;
sbit LCD_D5_Direction at TRISD5_bit;
sbit LCD_D6_Direction at TRISD6_bit;
sbit LCD_D7_Direction at TRISD7_bit;
/// Configuration de LCD

bit P1,P2,P3,P4;

   unsigned char *x,y,size,i,j;
     char text_lcd[16];
char x0[] = "            MESSAGE NUMBER ONE IS HERE ... (O_O)           ";
char x1[] = "            MESSAGE NUMBER TWO IS HERE ... (O_O)           ";
char x2[] = "            MESSAGE NUMBER three IS HERE ... (O_O)           ";
char x3[] = "            MESSAGE NUMBER foor IS HERE ... (O_O)           ";
char x4[] = "            MESSAGE NUMBER five IS HERE ... (O_O)           ";
char x5[] = "            MESSAGE NUMBER six IS HERE ... (O_O)           ";
void main()
{
option_reg.b7=0;
TRISB=0XFF;     // initialisation du port B en entrée
TRISd=0xFC;        //initialisation du port C en sortie
ADCON1=0X06;
Lcd_init();
Lcd_Cmd(_LCD_CURSOR_OFF);
while(1){

 if  ((portb & 0x0F)==1)  {x=x0;   size=sizeof(x0);}
if  ((portb & 0x0F)==2)  {x=x1;   size=sizeof(x1);}
 if  ((portb & 0x0F)==3)  {x=x2;   size=sizeof(x2);}
if  ((portb & 0x0F)==4)  {x=x3;   size=sizeof(x3);}
 if  ((portb & 0x0F)==3)  {x=x4;   size=sizeof(x4);}
if  ((portb & 0x0F)==4)  {x=x5;   size=sizeof(x5);}
        if (portb!=j) {j=portb;y=0;  }     // efface l'ecran chaque evenement
                lcd_out(1,1,text_lcd);
                
         for(i=0;i<16;i++)
        {  text_lcd[i]=x[i+y]; }

        delay_ms(200);
     y++;
       if(i+y==size)y=0;

         }
}