两个日期相差的天数

最新推荐文章于 2024-01-18 10:14:48 发布

杨亚仑

最新推荐文章于 2024-01-18 10:14:48 发布

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本文详细介绍了如何通过C语言实现日期差计算和判断闰年的算法，包括日期转换、闰年判断、日期差计算等核心步骤，旨在帮助开发者理解和实现日期相关的功能。

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#include<stdio.h>
int runnian(int year);
int dijitian(int year,int month,int day);
void swap(int*a,int*b);
int main()
{
int year1,month1,day1;
int year2,month2,day2;
int result=0;
scanf("%d%d%d",&year1,&month1,&day1);
scanf("%d%d%d",&year2,&month2,&day2);
if(year1==year2)
{
result=dijitian(year1,month1,day1)-dijitian(year2,month2,day2);

  if(result<0)
  result=0-result;
}
else
{
  if(year1>year2)
  {
  swap(&year1,&year2);
  swap(&month1,&month2);
  swap(&day1,&day2);
     }
  int a,b,c;
  if(runnian(year1))
  a=366-dijitian(year1,month1,day1);
  else
  a=365-dijitian(year1,month1,day1);
  b=0;
  for(int i=year1+1;i<year2;i++)
  {
   if(runnian(i))
   b+=366;
   else
   b+=365;
  }
  c=dijitian(year2,month2,day2);
  result=a+b+c;

}
printf("%d",result);
return 0;
}
int runnian(int year)
{
int result;
if(year%400==0||(year%4==0&&year%100!=0))
result=1;
else
result=0;
return(result);
}
int dijitian(int year,int month,int day)
{
int result=0;
for(int i=1;i<month;i++)
{
  if(i==1||i==3||i==5||i==7||i==8||i==10||i==12)
  result+=31;
  else if(i==4||i==6||i==9||i==11)
  result+=30;
  else if(i==2)
  {
   if(runnian(year))
   result+=29;
   else
   result+=28;
  }
}
  result+=day;
  return result;

}
void swap(int*a,int*b)
{
int e;
e=*a;
*a=*b;
*b=e;

}