i keep getting the same error message

Using Arduino Programming Questions
#1

i am trying to connect my lcd display to my pressure sensor and i keep getting error message “sensorpin not declared in this scope” can you help me out

code is as follows

// include the library code:
#include <LiquidCrystal.h>

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(7,8,9,10,11,12);

int potPin1 = A1;
int potPin2 = A2;

void setup()
{
// set up the LCD’s number of columns and rows:
lcd.begin(16, 2);
lcd.clear();

pinMode(potPin1, INPUT);
pinMode(potPin2, INPUT);

// declare the ledPin as an OUTPUT:
Serial.begin(9600);
}
void loop()
{
lcd.setCursor(0,0); // Sets the cursor to col 0 and row 0
lcd.print("SensorVal1: "); // Prints Sensor Val: to LCD
lcd.print(analogRead(potPin1)); // Prints value on Potpin1 to LCD
lcd.setCursor(0,1); // Sets the cursor to col 1 and row 0
lcd.print("SensorVal2: "); // Prints Sensor Val: to LCD
lcd.print(analogRead(potPin2)); // Prints value on Potpin1 to LCD

int i=0;
int sum=0;
int offset=0;
Serial.println(“init…”);
for(i=0;i<10;i++)
{
int sensorValue = analogRead(sensorPin)-512; //
sum+=sensorValue;
}
offset=sum/10.0;
Serial.println(“Ok”);
while(1)
{

int sensorValue = analogRead(sensorPin)-offset; //
Vout=(5sensorValue)/1024.0;
P=Vout-2.5;
Serial.print("Presure = " );
Serial.print(P1000);
Serial.println(“Pa”);
delay(1000);
}
}

thanks for your help

#2

Before a variable is used it must be declared so that the compiler can set aside the proper number of bytes of SRAM to hold the variable's value. Nowhere is sensorPin declared.

Read the how to use the forum-please read sticky to see how to properly post code and some good advice on how to get the most from the forum.

#3

There are other undeclared variables, not just sensorPin, such as Vout and P

#4