统计出生天数

#include<stdio.h>

int birthdays();//计算从出生日到现在的总天数
int sum();//计算某一年到某一年的总天数
int count();//计算闰年与非闰年某一天为该年第几天
int	number();//计算第n月m天为该年第几天的函数
int door=0;

int main()
{
int Year1;
int Month1;
int Date1;
int Year2;
int Month2;
int Date2;
int Days=0;

printf("请输入您的出生日期:year-math-day\n");
scanf("%d-%d-%d",&Year1,&Month1,&Date1);
printf("请输入您当前的日期:\nyear-math-day\n");
scanf("%d-%d-%d",&Year2,&Month2,&Date2);
Days=birthdays(Year1,Year2,Month1,Month2,Date1,Date2);
if(door=0)
{
printf("今天是你出生后的第%d天",Days);
}
else if (door=1)
{
printf("输入的信息有误！");
}

}

int birthdays(int Year1,int Year2,int Month1,int Month2,int Date1,int Date2)
{
int Sumdays=0;

if(Year1<Year2)
{
Sumdays=sum(Year1,Year2)+count(Year2,Month2,Date2)-count(Year1,Month1,Date1);

}
else if(Year1>Year2)
{
door=1;
}
return Sumdays;
}

int sum(int Year1,int Year2)
{
int n,Days=0;

for(n=Year1;n<Year2;n++)
{
if (((n%100!=0) && (n%4==0)) || (n%400==0))
{
Days+=366;
}
else
{
Days+=365;
}
}
return Days;
}

int count(int Year,int Month,int Date)
{
int Days=0;
int flg;

if ((Year%100!=0) && (Year%4==0) || (Year%400==0))
{
flg=1;
if (2==Month&&Date>29)
{
door=1;
}
Days+=number(Month,Date,flg);
}

else
{
if (2==Month&&Date>28)
{
door=1;
}
flg=2;
Days+=number(Month,Date,flg);
}

return Days;
}

int number(int Month,int Date,int flg)
{
int Days=0;
int i=Month;

if (i==1)
{
Days=Days+Date;
}
else if(i>1)
{
for(i=1;i<Month;i++)
{
if (1==i||3==i||5==i||7==i||8==i||10==i||12==i)
{
if(Date>31)
{
door=1;
}
Days+=31;
}

else if (4==i||6==i||9==i||11==i)
{
if(Date>30)
{
door=1;
}
Days+=30;
}

if(2==i)
{

if (1==flg)//通过标志位来辨别是否闰年
{
Days+=29;
}

if(2==flg)
{
Days+=28;
}
}

}
Days+=Date;
}
return Days;
}