c语言实现万年历程序
一个下午加一个晚上完成这个万年历程序，这是我目前为止写的最长的程序了，完成后运行成功的那一瞬间还是有一些小成就感的。
这个程序目前有五个功能：
1.查看当前年历或月历；
2.搜索某年年历或某月月历；
3.查询某天是星期几；
4.判断某年是否为闰年
5.查询历史上某年是该年的第几天
代码如下：
-----------------------------------------------------------------------------------------------------------------------------------------------------
#include
#include
#include "time.h"
int head() //显示欢迎界面，返回功能值
{int select;
printf("\n\n");
printf("\t\t\t<--欢迎使用万年历-->\n\n");
printf("\t\t****************************************\n");
printf("\t\t请选择要使用的功能：\n\n");
printf("\t\t\t1.查看当年年历或当月月历\n");
printf("\t\t\t2.搜素某年的年历或某月的日历\n");
printf("\t\t\t3.查询历史上某日为星期几\n");
printf("\t\t\t4.判断历史上某年是否为闰年\n");
printf("\t\t\t5.查询历史上某天是该年的第几天\n");
printf("\t\t\t6.退出\n");
printf("\t\t****************************************\n");
printf("\t\t\t请选择<1,2,3,4,5,6>：");
scanf("%d",&select) ;
printf("\n");
return(select);
}
void searchhead(int year,int month) //月历的表头
{printf("\t%d年%d月\n",year,month);
printf("\t***************************************************\n") ;
printf("\t日\t一\t二\t三\t四\t五\t六\n");
}
int monthnum(int year,int month) //返回月份多少天
{int a1[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
int a2[13]={0,31,29,31,30,31,30,31,31,30,31,30,31};
if(leapyear(year)==1)
{
return(a2[month]);
}
else
{
return(a1[month]);
}
}
int leapyear(int year) //判断是否为闰年
{
if(year%4==0&&year%100!=0||year%4==0&&year%400==0)
{
return(1);
}
else
{
return(0);
}
}
int week(int year,int month,int day) //根据蔡勒公式计算星期几
{int w ,c,y;
if(month==1)
{
month=13;
year=year-1;
}
if(month==2)
{
month=14;
year=year-1;
}
y=year%100;
c=(year/1000)*10+(year/100%10);
if(y==0)
{
c=c-1;
}
w=y+floor(y/4)+floor(c/4)-2*c+floor(26*(month+1)/10.0)+day-1;
while(w<0)
{
w=w+7;
}
if(w%7==0)
{
return(7);
}
return(w%7);
}
int function3() //第三个功能查询历史上某日为星期几的模块
{int year=0,month=1,day=1;
printf("-----查询历史上某日为星期几-----\n");
printf("\n");
do
{if(year<0)
{
printf("\t系统提示：您输入了错误的年份请从新输入...\n");
}
printf("\t请输入要查询的年份：");
scanf("%d",&year);
printf("\n");
} while(year<0);
do
{if(month<1||month>12)
{
printf("\t系统提示：您输入了错误的月份请从新输入...\n");
}
printf("\t请输入%d年的第几月：",year);
scanf("%d",&month);
printf("\n");
} while(month<1||month>12);
do
{if(day<1||day>31)
{
printf("\t系统提示：您输入了错误的日期请从新输入...\n");
}
printf("\t请输入%d年%d月的第几天：",year,month);
scanf("%d",&day);
printf("\n");
} while(day<1||day>31);
printf("\t您查询的%d年%d月%d号是星期%d\n\n",year,month,day,week(year,month,day));
}
void function4() //功能四判断历史上某年是否为闰年模块
{int year=0;
printf("-----判断历史上某年是否为闰年-----\n");
do
{if(year<0)
{
printf("\t系统提示：您输入了错误的年份请从新输入...\n");
}
printf("\t请输入要查询的年份：");
scanf("%d",&year);
printf("\n");
} while(year<0);
if(leapyear(year)==1)
{
printf("\t您查询的%d年是闰年\n\n",year);
}
else
{
printf("\t您查询的%d年不是闰年\n\n",year);
}
}
int function2() //模块二：搜素某年的年历或某月的日历模块
{int year=0,month=1,i,j,spacenum,count;
printf("-----搜素某年的年历或某月的日历-----\n\n");
do
{if(year<0)
{
printf("\t系统提示：您输入了错误的年份请从新输入...\n");
}
printf("\t请输入要查看的年份：");
scanf("%d",&year);
printf("\n");
} while(year<0);
do
{if(month<0||month>12)
{
printf("\t系统提示：您输入了错误的月份请从新输入...\n");
}
printf("\t请输入查看%d年的第几月,若想查看%d年年历请输入零：",year,year);
scanf("%d",&month);
printf("\n");
} while(month<0||month>12);
if(month!=0)
{
searchhead(year,month) ;
spacenum=week(year,month,1);
if(spacenum!=7) //输出空格
{
for(i=1;i<=spacenum;i++)
{
printf("\t ");
}
}
count=spacenum;
for(i=1;i<=monthnum(year,month);i++)
{
printf("\t%d ",i);
count++;
if(count%7==0)
{
printf("\n");
}
}
}
if(month==0)
{
for(j=1;j<=12;j++)
{
searchhead(year,j) ;
spacenum=week(year,j,1);
if(spacenum!=7) //输出空格
{
for(i=1;i<=spacenum;i++)
{
printf("\t ");
}
}
count=spacenum;
for(i=1;i<=monthnum(year,j);i++)
{
printf("\t%d ",i);
count++;
if(count%7==0)
{
printf("\n");
}
}
printf("\n\n");
}
}
}
int nowyear() //获取系统的年份
{
time_t rawtime;
struct tm * timeinfo;
time ( &rawtime );
timeinfo = localtime ( &rawtime );
return( timeinfo->tm_year+1900) ;
}
int nowmonth() //获取系统的月份
{
time_t rawtime;
struct tm * timeinfo;
time ( &rawtime );
timeinfo = localtime ( &rawtime );
return(timeinfo->tm_mon+1 ) ;
}
int function1() //模块一：查看当年年历或当月月历
{int k,i,j,spacenum,count;
printf("-----查看当年年历或当月月历-----\n\n");
printf("\t您想查看今年的年历还是当月的月历,请输入1【年历】或0【月历】:");
scanf("%d",&k);
printf("\n");
if(k==0)
{
searchhead(nowyear(),nowmonth()) ;
spacenum=week(nowyear(),nowmonth(),1);
if(spacenum!=7) //输出空格
{
for(i=1;i<=spacenum;i++)
{
printf("\t ");
}
}
count=spacenum;
for(i=1;i<=monthnum(nowyear(),nowmonth());i++)
{
printf("\t%d ",i);
count++;
if(count%7==0)
{
printf("\n");
}
}
}
if(k==1)
{
for(j=1;j<=12;j++)
{
searchhead(nowyear(),j) ;
spacenum=week(nowyear(),j,1);
if(spacenum!=7) //输出空格
{
for(i=1;i<=spacenum;i++)
{
printf("\t ");
}
}
count=spacenum;
for(i=1;i<=monthnum(nowyear(),j);i++)
{
printf("\t%d ",i);
count++;
if(count%7==0)
{
printf("\n");
}
}
printf("\n\n");
}
}
}
void function5() //功能五：查询历史上某天是该年的第几天
{int year=0,month=1,day=1,i,s=0;
int a[13]={0,31,29,31,30,31,30,31,31,30,31,30,31};
int b[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
printf("-----查询历史上某天是该年的第几天-----\n");
printf("\n");
do
{if(year<0)
{
printf("\t系统提示：您输入了错误的年份请从新输入...\n");
}
printf("\t请输入要查询的年份：");
scanf("%d",&year);
printf("\n");
} while(year<0);
do
{if(month<1||month>12)
{
printf("\t系统提示：您输入了错误的月份请从新输入...\n");
}
printf("\t请输入%d年的第几月：",year);
scanf("%d",&month);
printf("\n");
} while(month<1||month>12);
do
{if(day<1||day>31)
{
printf("\t系统提示：您输入了错误的日期请从新输入...\n");
}
printf("\t请输入%d年%d月的第几天：",year,month);
scanf("%d",&day);
printf("\n");
} while(day<1||day>31);
s=s+day;
if(leapyear(year)==1)
{
for(i=1;i