Arduino 101 Clothes Recommender

#include <Wire.h>    //include 2 libraries
#include "rgb_lcd.h"//for rgb lcd

#include <math.h>//include a library for math that will be done with the thermistor.

rgb_lcd lcd;

const int b1 = 2; //this is the button for the background
const int bc = 3; //this is the touch button that switches between fahrenheit and celsius

const int ot = A0;//this is the pin for the outside temp

float R;  //set the variables
float G; //for the color
float B;//of the background

int background = 4;//different values will make the rgb lcd a different color

int a;//original thermosistor value
int base = 3985;//base value of the thermistor
float c;//float for celsius
float f;//float for fahrenheit
float oc;//float for outside celsius
float of;//float for outside fahrenheit

int cf = 0;//0 for celsius, 1 for fahrenheit

float resistance;//float for the resistance of the thermistor

int i;//var for calling on function to find inside temp
int o;//var for calling on function to find outside temp

int cb;//int for calling on function to check the buttons

int count = 50;//int for looping the part that checks the color 50x

char* rec[]={"wear warm jacket","wear light coat","wear sweatshirt","wear long-sleves","wear a T-shirt"};//string for the cloathing recomendation
int re;//a var that will be used to determine which rec string to use

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

  pinMode(b1, INPUT); //define the buttons as input
  pinMode(bc, INPUT);
}



void loop() {
  cb = checkButtons(b1, bc);


  while (count > 0) {
    if (background == 1) { //if the background int is 1:
      R = 255; //set the variables for the background
      G = 0;
      B = 0;
    }
    else if (background == 2) { //else if the background int is 2:
      R = 0; //set the variables for the background
      G = 255;
      B = 0;
    }
    else if (background == 3) { //else if the background int is 3:
      R = 0; //set the variables for the background
      G = 0;
      B = 255;
    }
    else if (background == 4) { //else if the background int is 5:
      R = 255; //set the variables for the background
      G = 255;
      B = 255;
    }
    lcd.setRGB(R, G, B);//set the background color of the lcd screen
    count--;
    delay(20);//delay 5 milliseconds
  }


  int w =wetherRec(oc);
  
  if (cf == 0) {
    i = findC();
    o = findOC();
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print(c);
    lcd.print("c");
    lcd.setCursor(8, 0);
    lcd.print(oc);
    lcd.print("c");
    lcd.setCursor(0, 1);
    if (re=1){
      lcd.print(rec[1]);
    }
    else if (re=2){
      lcd.print(rec[2]);
    }
    else if (re=3){
      lcd.print(rec[3]);
    }
    else if (re=4){
      lcd.print(rec[4]);
    }
    else if (re=5){
      lcd.print(rec[5]);
    }
  }

  if (cf == 1) {
    i = findF();
    o = findOF();
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print(f);
    lcd.print("f");
    lcd.setCursor(8, 0);
    lcd.print(of);
    lcd.print("f");
    lcd.setCursor(0, 1);
    if (re=1){
      lcd.print(rec[1]);
    }
    else if (re=2){
      lcd.print(rec[2]);
    }
    else if (re=3){
      lcd.print(rec[3]);
    }
    else if (re=4){
      lcd.print(rec[4]);
    }
    else if (re=5){
      lcd.print(rec[5]);
    }
  }
  count=50;
}



int findF() { // function to find fahrenheit
  a = analogRead(A1); //find the original reading of the thermistor
  resistance = (float)(1023 - a) * 10000 / a; //get the resistance of the sensor;
  c = 1 / (log(resistance / 10000) / base + 1 / 298.15) - 273.15; //convert to Celsius
  f = (c * (9 / 5) + 32); //convert to fahrenheit
  return c;
  return f;//return the fahrenheit
}

int findC() { // function to find celsius
  a = analogRead(A1); //find the original reading of the thermistor
  resistance = (float)(1023 - a) * 10000 / a; //get the resistance of the sensor;
  c = 1 / (log(resistance / 10000) / base + 1 / 298.15) - 273.15; //convert to Celsius
  return c;//return the celsius
}

int findOF() { //function to find the outside fahrenheit
  int t = analogRead(ot);//create a variable to store the value of the outside tmp36 module
  float voltage = (t / 1024.0) * 5.0;//convert the ADC reading to voltage
  // the sensor changes 10 mV per degree celsius
  // the datasheet says there's a 500 mV offset
  oc = (voltage - .5) * 100;//convert to celsius
  of = (oc * (9 / 5) + 32); //convert to fahrenheit
  return oc;
  return of;//return the outside fahrenhiet
}

int findOC() { //function to find the outside fahrenheit
  int t = analogRead(ot);//create a variable to store the value of the outside tmp36 module
  float voltage = (t / 1024.0) * 5.0;//convert the ADC reading to voltage
  // the sensor changes 10 mV per degree celsius
  // the datasheet says there's a 500 mV offset
  oc = (voltage - .5) * 100; //convert to celsius
  return oc;//return the outside celsius
}

int wetherRec(int oc){
  if(oc<-5){//if the outside temp (in c) is less than -5
    re=1;//change re to "wear warm jacket"
  }
  else if(oc<12){//etc...
    re=2;
  }
  else if(oc<16){
    re=3;
  }
  else if(oc<21){
    re=4;
  }
  else{
    re=5;
  }
}



int checkButtons(int b1, int bc) {
  int b = digitalRead(b1);//make the variable b what is read on b1
  if (b == 1) { //if b (the reading of b1) is HIGH (pressed)
    if (background < 4) {
      background++;
    }
    else if (background == 4) {
      background = 1;
    }
  }

  b = digitalRead(bc);
  if (b == 1) {
    if (cf == 0) {
      cf = 1;
    }
    else if (cf == 1) {
      cf = 0;
    }
  }
  return background;// return the background int
  return cf;//return the celsius/fahrenheit int
}