protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    c=(Button) findViewById(R.id.c);
    f=(Button) findViewById(R.id.f);
    display =(TextView) findViewById(R.id.textView1);
    c.setOnClickListener(new View.OnClickListener(){
        public void onClick(View v)
        {

             adcPin   = "P9_36";//pin number
            int adcValue,t_c,t_f;


            adcValue = analogRead(adcPin);**which android function to use?**



            t_c = adcValue * 100+10;
             display.setText("Temperature is "+ t_c);

        }
    });