Interfacing BMP280 Pressure Sensor with Arduino

#include <Wire.h>
#include <SPI.h>
#include <Adafruit_BMP280.h>
#include <LiquidCrystal.h>
Adafruit_BMP280 bmp; // I2C
//Adafruit_BMP280 bmp(BMP_CS); // hardware SPI
//Adafruit_BMP280 bmp(BMP_CS, BMP_MOSI, BMP_MISO,  BMP_SCK);
LiquidCrystal lcd(9, 8, 5, 4, 3, 2);
void setup() {  lcd.begin(16,2);  Serial.begin(9600);  Serial.println(F("BMP280 test"));  lcd.print("Welcome to ");  lcd.setCursor(0,1);  lcd.print("CIRCUIT DIGEST");  delay(1000);  lcd.clear();  if (!bmp.begin()) {    Serial.println(F("Could not find a valid BMP280 sensor, check wiring!"));    while (1);  }  /* Default settings from datasheet. */  bmp.setSampling(Adafruit_BMP280::MODE_NORMAL,     /* Operating Mode. */                  Adafruit_BMP280::SAMPLING_X2,     /* Temp. oversampling */                  Adafruit_BMP280::SAMPLING_X16,    /* Pressure oversampling */                  Adafruit_BMP280::FILTER_X16,      /* Filtering. */                  Adafruit_BMP280::STANDBY_MS_500); /* Standby time. */
}
void loop() {    Serial.print(F("Temperature = "));    Serial.print(bmp.readTemperature());    Serial.println(" *C");    lcd.setCursor(0,0);    lcd.print("Temp= ");    lcd.print(bmp.readTemperature());
    Serial.print(F("Pressure = "));    Serial.print(bmp.readPressure());    Serial.println(" Pa");    lcd.setCursor(0,1);    lcd.print("Press= ");    lcd.print(bmp.readPressure());    Serial.print(F("Approx altitude = "));    Serial.print(bmp.readAltitude(1018)); /* Adjusted to local forecast! */    Serial.println(" m");    Serial.println();    delay(2000);
}