char kp,i,x,j,m,n;
char keypadport at portd;

  void init_SEG()
  {portb=x; portc=32; delay_ms(1); portc=0;
   portb=j; portc=16; delay_ms(1); portc=0;
   portb=m; portc=128; delay_ms(1); portc=0;
   portb=n; portc=64; delay_ms(1); portc=0;
  }
  void init_keypad()
  {keypad_init();
   kp=keypad_key_click();
   switch(kp){
              case 1: kp=1; break;
              case 2: kp=4; break;
              case 3: kp=7; break;
              case 4: kp='*'; break;
              case 5: kp=2; break;
              case 6: kp=5; break;
              case 7: kp=8; break;
              case 8: kp=0; break;
              case 9: kp=3; break;
              case 10: kp=6; break;
              case 11: kp=9; break;
              case 12: kp=12,x=j=0; break;
             }
  }
void main() { ADCON1=7;
 trisb=0b00110000;
 trisc=0b00000000;
 portb=0b00000000;
 portc=0b00000000;
 x=0;j=0;m=0;n=0;
 while(1)
 { init_keypad();
  while (kp&&(kp!='*')&&(kp!=12))
  {for(i=0;i<88;i++){if (kp) x=kp; j=0; init_keypad(); delay_ms(10);
                     if(kp&&x){j=x; x=kp; kp=0; break;}
                     init_SEG();
                    }
  }
   if(kp=='*')     {x++;
                    if(x==10){j++; x=0;}
                    if(j<n) {j=(n); x=(m)+1;if(x==10){j++; x=0;} }
                    if(j==n) {if(x<=m)x=(m)+1;if(x==10){j++; x=0;}}
                   }       if(x==10,j==10)x=j=0;
   if(portb.f5==1){m++;
                    if(m==10){n++; m=0;}
                    if(n<j) {n=(j); m=(x)+1;if(m==10){n++; m=0;}}
                    if(n==j) {if(m<=x)m=(x)+1;if(m==10){n++; m=0;}}
                    delay_ms(250);
                   }      if(m==10,n==10)m=n=0;
   if(portb.f4==1) m=n=0;
   init_SEG();
 }
}