please help me to add tare value coding to this program

Projects General Guidance
1

#include <LiquidCrystal.h>
int Contrast=100;
int brightness=30;
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
void setup()
{
analogWrite(6,Contrast);
analogWrite(10,Contrast);
lcd.begin(16, 2);
pinMode(A0, INPUT);
pinMode(A1, INPUT);
pinMode(A2, INPUT);
pinMode(A3, INPUT);
}
void loop()
{
lcd.setCursor(0, 0);
float voltage1=analogRead(A0);
voltage1= ((voltage1/1024)*5);
lcd.print("v1=");
lcd.print(voltage1);
delay(500);
lcd.setCursor(8,0);
float voltage2=analogRead(A1);
voltage2= ((voltage2/1024)*5);
lcd.print("v2=");
lcd.print(voltage2);
delay(500);
lcd.setCursor(0, 1);
float voltage3=analogRead(A2);
voltage3= ((voltage3/1024)*5);
lcd.print("v3=");
lcd.print(voltage3);
delay(500);
lcd.setCursor(8, 1);
float voltage4=analogRead(A3);
voltage4= ((voltage4/1024)*5);
lcd.print("v4=");
lcd.print(voltage4);
delay(500);
}

2

Please describe your project.

The subtitle of the Installation and Troubleshooting section states that it's "not for help with your project". I will ask a moderator to move your post.

3

ok will do