I have been trying to write some code for a project where I move a servo based off of the resistance for a soft pot. I am writing it in C++ on an arduino board, and want my servo to move a certain amount for each range of resistance values. Here is my code:

#include <Servo.h>


const int SoftPot = A0;
int RedLow = 3;
int YellowHigh = 2;

Servo Servo1;

int a = 0;


void setup() {
   Serial.begin(9600);
   pinMode(SoftPot, INPUT);
   pinMode(RedLow, OUTPUT);
   pinMode(YellowHigh, OUTPUT);

   Servo1.attach(9);

   
   //Servo1.write(a);

   
}

void loop() {
  int SoftPotADC = analogRead(SoftPot);
  int SoftPotPos = map(SoftPotADC, 0, 1023, 0, 1023);
  
/*  if(SoftPotPos <= 500) digitalWrite(RedLow, HIGH);
    else digitalWrite(YellowHigh, HIGH);
*/
  if(SoftPotPos <= 70){
    Servo1.write(a);
  }
  else if(70 < SoftPotPos <= 300){
    
    Servo1.write(a + 30);
  }

  else if (300 < SoftPotPos <= 500){
    
    Servo1.write(a + 60);
  }

  
  else if(500 < SoftPotPos <= 800){
    Servo1.write(a + 90);
  }

  else if(800 < SoftPotPos <= 1000){
    Servo1.write(a + 120);
  }  


  
  Serial.println(SoftPotPos);
}

I would really appreciate your feedback! I have only nascent theories about what the problem could be.

Source: Windows Questions C++