Add 0x24 and 0x56 and show it on LCD without using lcd.print() or lcd.write()

Add 0x24 and 0x56 and show it on LCD without using lcd.print() or lcd.write()

#include <Arduino.h>
#include <LiquidCrystal.h>
LiquidCrystal lcd(A0,A1,A2,A3,A4,A5);
void setup()
{
    lcd.begin(16,2);
    lcd.clear();
    lcd.setCursor(0,0);
    byte x1=0x24;
    byte x2=0x56;
    byte z=x1+x2;
    byte z1=z>>4;
    z1=z1&0x0F;
    byte z2= z>>0;
    z2=z2&0x0F;
    if (z1<=9)
    {
        z1=z1+0x30;
    }
    else
    {
        z1=z1+0x37;
    }
    if (z2<=9)
    {
        z2=z2+0x30;
    }
    else
    {
        z2=z2+0x37;
    }



/// configure LCDDR
    digitalWrite(A0,LOW);
    digitalWrite(A0,HIGH);
delay(5);

///start writing Z1 Values
/// WRITE UPPER 4 bit Values
    bitWrite(PORTC,5,bitRead(z1,7));
    bitWrite(PORTC,4,bitRead(z1,6));
    bitWrite(PORTC,3,bitRead(z1,5));
    bitWrite(PORTC,2,bitRead(z1,4));
delay(5);
/// Send E Pulse
    digitalWrite(A1,LOW);
    digitalWrite(A1,HIGH);
    digitalWrite(A1,LOW);
delay(5);

/// Lower 4 bits of Z1

/// WRITE LOWER 4 bit Values
    bitWrite(PORTC,5,bitRead(z1,3));
    bitWrite(PORTC,4,bitRead(z1,2));
    bitWrite(PORTC,3,bitRead(z1,1));
    bitWrite(PORTC,2,bitRead(z1,0));
delay(5);
/// Send E Pulse
    digitalWrite(A1,LOW);
    digitalWrite(A1,HIGH);
    digitalWrite(A1,LOW);
delay(5);

///start writing Z2 Values
///UPPER 4 bit First

/// NOW WRITE UPPER 4 bit Values
    bitWrite(PORTC,5,bitRead(z2,7));
    bitWrite(PORTC,4,bitRead(z2,6));
    bitWrite(PORTC,3,bitRead(z2,5));
    bitWrite(PORTC,2,bitRead(z2,4));
delay(5);
/// Send E Pulse
    digitalWrite(A1,LOW);
    digitalWrite(A1,HIGH);
    digitalWrite(A1,LOW);
delay(5);

/// Lower 4 bits of Z2
/// NOW WRITE LOWER 4 bit Values
    bitWrite(PORTC,5,bitRead(z2,3));
    bitWrite(PORTC,4,bitRead(z2,2));
    bitWrite(PORTC,3,bitRead(z2,1));
    bitWrite(PORTC,2,bitRead(z2,0));
delay(5);
/// Send E Pulse
    digitalWrite(A1,LOW);
    digitalWrite(A1,HIGH);
    digitalWrite(A1,LOW);
delay(5);

}

void loop()
{

}