// LCD1602 to Arduino Uno connection example

#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

void printType(unsigned char x)
{
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("unsigned char");
  lcd.setCursor(0,1);
  lcd.print("sizeof(x)=");
  lcd.print(sizeof(x));
}

void printType(signed char x)
{
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("signed char");
  lcd.setCursor(0,1);
  lcd.print("sizeof(x)=");
  lcd.print(sizeof(x));
}

void printType(unsigned short x)
{
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("unsigned short");
  lcd.setCursor(0,1);
  lcd.print("sizeof(x)=");
  lcd.print(sizeof(x));
}

void printType(signed short x)
{
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("signed short");
  lcd.setCursor(0,1);
  lcd.print("sizeof(x)=");
  lcd.print(sizeof(x));
}

void printType(unsigned int x)
{
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("unsigned int");
  lcd.setCursor(0,1);
  lcd.print("sizeof(x)=");
  lcd.print(sizeof(x));
}

void printType(signed int x)
{
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("signed int");
  lcd.setCursor(0,1);
  lcd.print("sizeof(x)=");
  lcd.print(sizeof(x));
}

void setup() 
{
  unsigned char uchar;
  signed char   schar;
  unsigned short ushort;
  signed short sshort;
  unsigned int uint;
  signed int sint;

  lcd.begin(16, 2);
 
  printType(uchar);
  delay(1000);
  lcd.clear();
  delay(1000);
  printType(schar);
  delay(1000);
  lcd.clear();
  delay(1000);
  printType(ushort);
  delay(1000);
  lcd.clear();
  delay(1000);
  printType(sshort);
  delay(1000);
  lcd.clear();
  delay(1000);
  printType(uint);
  delay(1000);
  lcd.clear();
  delay(1000);
  printType(sint);
  delay(1000);
  lcd.clear();
  delay(1000);
  printType(ushort & ushort);

}

void loop() {
  // ...
}