[arduino code examples for A6v3]-03 Read analog input ports value

Code:
#include "Arduino.h"

#include "PCF8574.h" 



#define ANALOG_A1   4

#define ANALOG_A2   5

#define ANALOG_A3   6

#define ANALOG_A4   7



void setup()

{

    Serial.begin(115200);

  pinMode(ANALOG_A1,INPUT);

  pinMode(ANALOG_A2,INPUT);

  pinMode(ANALOG_A3,INPUT);

  pinMode(ANALOG_A4,INPUT);

}



void loop()

{

  Serial.printf("Current Reading A1 on Pin(%d)=%d\n",ANALOG_A1,analogRead(ANALOG_A1));

  Serial.printf("Current Reading A2 on Pin(%d)=%d\n",ANALOG_A2,analogRead(ANALOG_A2));

  Serial.printf("Current Reading A3 on Pin(%d)=%d\n",ANALOG_A3,analogRead(ANALOG_A3));

  Serial.printf("Current Reading A4 on Pin(%d)=%d\n",ANALOG_A4,analogRead(ANALOG_A4));

  delay(500);

}