Week 3 and 4 : The Programming for the movement of robot

 I have to write the program for my robot and burn into the ATM328P which also known as the Arduino. 

Below is my program for the robot using C language:

#include <math.h>

int backLight = 13;

#include <math.h>

int analogPin0 = 0;     // potentiometer wiper (middle terminal) connected to analog pin 2

int analogPin1 = 1;     // potentiometer wiper (middle terminal) connected to analog pin 3

int analogPin2 = 2;     // potentiometer wiper (middle terminal) connected to analog pin 4

int hba =  2;

int hbb =  6;

int hb0 =  9;

int hb1 =  10;

int hb2 =  11;

int hb3 =  12;

float val;

int val0;

int val1;

int val2;

void setup()

{

  pinMode(backLight, OUTPUT);

delay(1000);         

}

void loop()

  {

digitalWrite(hba, LOW);

digitalWrite(hbb, LOW); 

digitalWrite(hb0, LOW);

                digitalWrite(hb1, HIGH);

                digitalWrite(hb2, LOW); 

digitalWrite(hb3, HIGH);

                delay(100);

  }

                   else if (val1<=250 && val>=32)

          {

   digitalWrite(hba, HIGH);

   digitalWrite(hbb, HIGH); 

   digitalWrite(hb0, LOW);

   digitalWrite(hb1, HIGH);

   digitalWrite(hb2, LOW); 

   digitalWrite(hb3, HIGH);

   delay(100);

 }

  else if (val1>250 && val<32)

           {

                      if (val0<val2)

                       {

      digitalWrite(hba, LOW);

                     digitalWrite(hbb, LOW);

            digitalWrite(hb0, LOW);

            digitalWrite(hb1, LOW);

            digitalWrite(hb2, LOW); 

            digitalWrite(hb3, HIGH);

            delay(500);

        }

     else if (val2<val0)

       {

        digitalWrite(hba, LOW);

        digitalWrite(hbb, LOW);

        digitalWrite(hb0, LOW);

        digitalWrite(hb1, HIGH);

        digitalWrite(hb2, LOW); 

        digitalWrite(hb3, LOW);

        delay(500); 

        }

   }

   else if (val1>250 && val>=32)

   {

     if (val0<val2)

       {

        digitalWrite(hba, HIGH);

        digitalWrite(hbb, HIGH);

        digitalWrite(hb0, LOW);

        digitalWrite(hb1, LOW);

        digitalWrite(hb2, LOW); 

        digitalWrite(hb3, HIGH);

        delay(500);

        }

     else if (val2<val0)

       {

        digitalWrite(hba, HIGH);

        digitalWrite(hbb, HIGH);

        digitalWrite(hb0, LOW);

        digitalWrite(hb1, HIGH);

        digitalWrite(hb2, LOW); 

        digitalWrite(hb3, LOW);

        delay(500); 

        }

   }

}