I am trying make 3 different types of mass measurements using 4 force sensor I got some errors

Using Arduino Programming Questions
1

Hello, I have a question basically I have an issue programming the code with three different mass measurements. First I am trying to measure mass from 0 grams to 1000 grams.
And I am trying separate three parts the first part is x < 300 grams, the second part is x > 300 grams && x< 600 grams, and the third part is else is above 600 grams. Can u help me how to code this?

const int f0 = A0;
const int f1 = A1;
const int f2 = A2;
const int f3 = A3;

const int red = 9;
const int green = 10;
const int blue = 11;

float s0 = 0; // value read from the pot
float s1 = 0;
float s2 = 0;
float s3 = 0;

float pred = 0;
int outputValue = 0; // value output to the PWM (analog out)
int rep = 10;

void setup() {
// initialize serial communications at 9600 bps:
Serial.begin(9600);
pinMode(red, OUTPUT);
pinMode(green, OUTPUT);
pinMode(blue, OUTPUT);
}

void loop() {
float sum0 = 0;
float sum1 = 0;
float sum2 = 0;
float sum3 = 0;

s0=analogRead(f0);
s1=analogRead(f1);
s2=analogRead(f2);
s3=analogRead(f3);
float sum = (s0+s1+s2+s3)*5.0/1023.0;
if (sum<19.0){
  delay(750);
  for (int i = 0; i < rep; i++) {
        sum0 += analogRead(f0);
        sum1 += analogRead(f1);
        sum2 += analogRead(f2);
        sum3 += analogRead(f3);      
      }

      sum0 *= (5.0 / 1023.0);
      sum1 *= (5.0 / 1023.0);
      sum2 *= (5.0 / 1023.0);
      sum3 *= (5.0 / 1023.0);

      s0 = sum0 / rep;
      s1 = sum1 / rep;
      s2 = sum2 / rep;
      s3 = sum3 / rep;
      sum = s0+s1+s2+s3;
      if (sum < 3.1){
        pred = -95.994241 + 333.23423/sum;
      }
      else if (sum > 3.1 && sum < 3.6){
        pred = -923.262974 + 17232.1374/sum;
      }
      else {
        pred = -11127.81 + 33575.004/sum;
        }
      
      Serial.print("s0 = ");
      Serial.println(s0);
      Serial.print("s1 = ");
      Serial.println(s1);
      Serial.print("s2 = ");
      Serial.println(s2);
      Serial.print("s3 = ");
      Serial.println(s3);
      Serial.print("volts: ");
      Serial.println(sum/4);
      Serial.print("grams: ");
      Serial.println(pred);
      Serial.println("_____________________");
      Serial.println(sum);
      delay(700);
   }

if (pred < 200){
  digitalWrite(red, HIGH);
  digitalWrite(blue, LOW);
  digitalWrite(green, LOW);
}
else if (pred < 400 && pred >= 200){
  digitalWrite(red, LOW);
  digitalWrite(blue, LOW);
  digitalWrite(green, HIGH);
}
else {
  digitalWrite(red, LOW);
  digitalWrite(blue, HIGH);
  digitalWrite(green, LOW);
}

}

2

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3

What is the problem with your code (besides not being formatted and posted correctly)? You say what it is supposed to do. What does it really do?

Are there compile errors or warnings? If so, post the entire text of the warnings and errors.

4

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