pic16f877a c语言时钟程序

                                            CurrentDate.year1++;
                                        }
                                        else
                                            CurrentDate.year2++;
                                    }
                                    else
                                        CurrentDate.year3++;
                                }
                                else
                                    CurrentDate.year4++;
                            }
                            else if(CurrentDate.monthl == 9)
                            {
                                CurrentDate.monthl = 0;
                                CurrentDate.monthh++;
                            }
                            else
                                CurrentDate.monthl++;
                        }
                        else if(CurrentDate.dayl == 9)
                        {
                            CurrentDate.dayl=0;
                            CurrentDate.dayh++;
                        }
                        else
                            CurrentDate.dayl++;
                    }
                    else
                        CurrentTime.hourl++;
                }
                else
                    CurrentTime.minuteh++;
            }
            else
                CurrentTime.minutel++;
        }
        else
            CurrentTime.secondh++;
    }
    else
        CurrentTime.secondl++;
    if ((Alarm1Alarm == false) & (Alarm2Alarm == false))
    {
        led = 0;
        CCP1CON = PWM_off;
    }
    else
    {
        if (led == 1)
        {
            led = 0;
            PR2 = PWM_period;    //    set pwm period
            CCPR1L = PWM_DC;    //    set pwm duty cycle
            //CCP1CON = PWM_on;

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