#include <16F877.h> 
#fuses HS 
#use delay(clock=4000000) 
#include <lcd.c> // call lcd.c file from libraly 

void main() 
{ 
   int n; // n=234; 
   
   lcd_init(); //initial lcd display 
   lcd_gotoxy(6,1); //determine coordinate (char,line) 
   
   printf(lcd_putc"POWER"); 
   lcd_gotoxy(1,2); 
   printf(lcd_putc"Number= %u unit",n);
   
   WHILE(TRUE) 
      { 
         chk_pressed: if(input(pin_a0)) {goto chk_pressed;} 
         chk_released: if(!input(pin_a0)) {goto chk_released;} 
         
         n=n+1; 
         
         lcd_gotoxy(6,1); //determine coordinate (char,line)         
         printf(lcd_putc"POWER");
         
         lcd_gotoxy(1,2); 
         printf(lcd_putc"counter= %u unit",n); 
      } 
}