Adding hundretdths to this GPS Clock Sketch

Projects General Guidance
1

Could somebody make hundreths show in the display with this sketch? I added manually, but by now hundredths are showing exactly the same as seconds...

//Llibreries
#include <SoftwareSerial.h>//incluimos SoftwareSerial
#include <TinyGPS.h>//incluimos TinyGPS
#include <Wire.h>
#include <LCD.h>
#include <LiquidCrystal_I2C.h>
//Definicions
#define I2C_ADDR    0x3F // <<----- Add your address here.  Find it from I2C Scanner
#define BACKLIGHT_PIN     3
#define En_pin  2
#define Rw_pin  1
#define Rs_pin  0
#define D4_pin  4
#define D5_pin  5
#define D6_pin  6
#define D7_pin  7
char str[70];
char *test="$GPRMC";
int temp,i;
int n = 1;

//Arrrancada de periferics
LiquidCrystal_I2C  lcd(I2C_ADDR,En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin);
TinyGPS gps; //Declaramos el objeto gps
SoftwareSerial serial1(4,3); //Declaramos el pin 4 Tx y 3 Rx
//Declaramos la variables para la obtención de datos
int year;
byte month, day, hour, minute, second, hundredths;
unsigned long chars;
unsigned short sentences, failed_checksum;

void setup()
{
lcd.begin (20,4);
serial1.begin(9600);//Iniciamos el puerto serie del gps
lcd.setCursor(0,0);
lcd.print("Buscando GPS");
}

void loop()
{
  serial1Event();
  if (temp) 
  {
    int str_lenth=i;
    int x=0,comma=0;
    String UTC_hour="";
    String UTC_minut="";
    String UTC_second="";
    String UTC_hundreth="";
    String str1="";
    while(x<str_lenth)
    {
     if(str[x]==',')
     comma++;
      if(comma==1)
      {
        x++;
        UTC_hour+=str[x++];
        UTC_hour+=str[x++];
        UTC_minut+=str[x++];
        UTC_minut+=str[x++];
        UTC_second+=str[x++];
        UTC_second+=str[x];
        UTC_hundreth+=str[x++];
        UTC_hundreth+=str[x];
        comma=2;
      }
      x++;
    }
    int UTC_hourDec=UTC_hour.toInt();
    int UTC_minutDec=UTC_minut.toInt();
    int Second=UTC_second.toInt();
    int Hundreth=UTC_hundreth.toInt();
    int Hour=UTC_hourDec+2;
    int Minut=UTC_minutDec+0;
    if(Minut>59)
    Minut-=60;
    
    
    lcd.setCursor(0,0);
    lcd.print("Salida:");
    if (Hour<10){lcd.print(0);}
    lcd.print(Hour);
    lcd.print(":");
    if (Minut<10){lcd.print(0);}
    lcd.print(Minut);
    lcd.print(":");
    if (Second<10){lcd.print(0);}
    lcd.print(Second);
    lcd.print(";");
    if (Hundreth<10){lcd.print(0);}
    lcd.print(Hundreth);
    temp=0;
    

    i=0;
    x=0;
    str_lenth=0;

  }

}
void serial1Event()
{
  while(1)
  {
   while (serial1.available())            //checking serial data from GPS
   {
    char inChar = (char)serial1.read();
     str[i]= inChar;                    //store data from GPS into str[]
     i++;
     if (i < 7)                      
     {
      if(str[i-1] != test[i-1])         //checking for $GPRMC sentence
      {
        i=0;
      }
     }
    if(i>65)
    {
     temp=1;
     break;
    }
  }
   if(temp)
    break;
  }
}
2 
        UTC_second+=str[x++];
        UTC_second+=str[x];
        UTC_hundreth+=str[x++];
        UTC_hundreth+=str[x];

Maybe you can fix it yourself.

3

??? that's the same I have

4

I know, that's why I highlighted it, so you'll know which bit to fix.