Keypad and LCD help

Projects General Guidance
4

sorry the whole code so far is:

#include <LiquidCrystal.h>
#include <Wire.h>
#include <Keypad.h>

const byte rows = 4;
const byte cols = 4;

char keys[rows][cols] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};

byte rowPins[rows] = {22, 23, 24, 25};
byte colPins[cols] = {26 ,27 ,28 ,29};

Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, rows, cols);

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(8,9,4,5,6,7);

void setup() {
   // set up the LCD's number of columns and rows: 
  lcd.begin(16, 2);    
  lcd.setCursor(0,0);
  lcd.print("Welcome,");
  delay(3000);
  ClearScreen();
  lcd.setCursor(0,0);
  lcd.print("To my");
  lcd.setCursor(0,1);
  lcd.print("Project 2014");
  delay(3000);
  ClearScreen();
  lcd.setCursor(0,0);
  lcd.print("Let's begin");
  lcd.setCursor(0,1);
  delay(3000);
  ClearScreen();
  
}

void loop()
{
 TemperatureScreen(); 

}

void ClearScreen()
{
  lcd.setCursor(0,0);
  lcd.print("                    ");
  lcd.setCursor(0,1);
  lcd.print("                    ");
}

void TemperatureScreen()
{
  char Temp1 = keypad.getKey();
  
  lcd.setCursor(0,0);
  lcd.print("Temperature?");
  lcd.setCursor(2,1);
  lcd.print((char)223);
  lcd.setCursor(3,1);
  lcd.print("C");
  lcd.setCursor(0,1);
 
   if (int(Temp1) != 0) 
   {
    lcd.print(Temp1);
}
void VolumeScreen()
{
  lcd.setCursor(0,0);
  lcd.print("Volume?");
  lcd.setCursor(2,1);
  lcd.print("L");

}

void ConfirmationScreen()
{
}

and my setup so far is:

See now I want to be able to type to variables into (0,1) and (1,1), followed by pressing the A button to confirm or B to cancel, but to be able to use these variables later on in the code is this possible?