File content as of revision 0:3e0cc153ba82:

#include "mbed.h"
#include "TextLCD.h"

TextLCD lcd(PTC9, PTC8, PTA5, PTA4, PTA12, PTD4, TextLCD::LCD16x2); // rs, e, d4-d7 but could use 

DigitalIn sw1(PTD1);  // Switch selected as input
DigitalIn sw2(PTD3);
DigitalIn sw3(PTD2);
DigitalIn sw4(PTD0);


int main() {
  lcd.cls();                      //  clear LCD screen
    lcd.printf(" Switch and LCD "); 
    lcd.locate(0,1);                  // locate (column,row)
    lcd.printf("A= ,B= ,C= ,D= ");
  while (1){
      if (sw1 == 1)
      {lcd.locate(2,1);
      lcd.printf("1");
      }
      else {lcd.locate(2,1);
            lcd.printf("0");}
      if (sw2 == 1)
      {lcd.locate(6,1);
      lcd.printf("1");
      }
      else {lcd.locate(6,1);
            lcd.printf("0");}
       
      
      if (sw3 == 1)
      {lcd.locate(10,1);
      lcd.printf("1");
      }
      else {lcd.locate(10,1);
            lcd.printf("0");} 
            
      if (sw4 == 1)
      {lcd.locate(14,1);
      lcd.printf("1");
      }
      else {lcd.locate(14,1);
            lcd.printf("0");}      
}
}