Code:
/* Temp Anfang!! */
        int LM35 = A0;
        float SensorValue = 0;
        float temperatur = 0;
        float temp[5];
      /* Temp ENDE!! */
 
        /* LCD  Display Anfang!! */
              #include <SoftwareSerial.h>
 
              #define txPin 2
 
              SoftwareSerial LCD = SoftwareSerial(0, txPin);
                    // since the LCD does not send data back to the Arduino, we should only define the txPin
              const int LCDdelay=10;  // conservative, 2 actually works
 
                
                   // wbp: goto with row & column
              void lcdPosition(int row, int col) {
                  LCD.write(0xFE);   //command flag
                  LCD.write((col + row*64 + 128));    //position
                  delay(LCDdelay);
              }
              
              void clearLCD(){
                  LCD.write(0xFE);   //command flag
                  LCD.write(0x01);   //clear command.
                  delay(LCDdelay);
              }
            
             void backlightOn() {  //turns on the backlight
                  LCD.write(0x7C);   //command flag for backlight stuff
                  LCD.write(157);    //light level.
                  delay(LCDdelay);
            }
 
            void backlightOff(){  //turns off the backlight
                  LCD.write(0x7C);   //command flag for backlight stuff
                  LCD.write(128);     //light level for off.
                  delay(LCDdelay);
            }
            
            void serCommand(){   //a general function to call the command flag for issuing all other commands  
                  LCD.write(0xFE);
            }
       /* LCD Display ENDE!! */
      
  void setup() {
      Serial.begin(9600); //temp
      
      /* LCD Display Anfang!! */
        pinMode(txPin, OUTPUT);
        LCD.begin(9600);
        clearLCD();
        lcdPosition(0,0);
        LCD.print(temperatur);
        LCD.print(" Grad");
      /* LCD Display ENDE!! */
  }
 
  void loop() {
    /* Temp Anfang!! */
SensorValue = analogRead(LM35); //temp
temp[1] = (5.0 * analogRead(LM35) * 100.0) / 1024;
delay(1000); // 1 Sekunde Pause zwischen den Messungen machen
temp[2] = (5.0 * analogRead(LM35) * 100.0) / 1024;
delay(1000);
temp[3] = (5.0 * analogRead(LM35) * 100.0) / 1024;
delay(1000);
temp[4] = (5.0 * analogRead(LM35) * 100.0) / 1024;
delay(1000);
temp[5] = (5.0 * analogRead(LM35) * 100.0) / 1024;
 
temperatur = (temp[1] + temp[2] + temp[3] + temp[4] + temp[5])/5; //Mittelwert aus 5 Messungen bilden
//Serial.print(SensorValue, DEC);
//Serial.print(” –> “);
Serial.print(temperatur, 1); //Ausgabe der Temperatur mit einer Nachkommastelle
Serial.println("Grad Celsius");
  /* Temp Ende */
  }