File content as of revision 1:4e5a747ab6eb:

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

DigitalIn psw(p14);
DigitalIn psw1(p15);
DigitalIn psw2(p16);
DigitalIn psw3(p17);

TextLCD lcd(p25, p24, p23, p22, p21, p20, TextLCD::LCD16x2); 
int loop =10;

int main() {
  lcd.cls();                      //  clear LCD screen
    lcd.printf(" switch and LCD ");
    lcd.locate(0,1);
    lcd.printf("A= ,B= ,C= ,D= ");
  while (loop>0){
      if (psw == 1)
      {lcd.locate(2,1);
      lcd.printf("1");
      }
      else {lcd.locate(2,1);
            lcd.printf("0");}
      if (psw1 == 1)
      {lcd.locate(6,1);
      lcd.printf("1");
      }
      else {lcd.locate(6,1);
            lcd.printf("0");}
       
      
      if (psw2 == 1)
      {lcd.locate(10,1);
      lcd.printf("1");
      }
      else {lcd.locate(10,1);
            lcd.printf("0");} 
            
      if (psw3 == 1)
      {lcd.locate(14,1);
      lcd.printf("1");
      }
      else {lcd.locate(14,1);
            lcd.printf("0");}      
}
}