leapyear

#include

voidDateTrans(char*chDate,int*nYear,int*nMonth,int*nDay);

//1

intIsLeapYear(intnYear);

//2

intGetWeekOfFirstday(intnYear);

//3

intGetWeek(intnYear,intnMonth,intnDay,intnWeekOfFirstday);

//4

voidPrintCalendar(intnWeek,intnDay,intnMonthDays,char*chDate);

//5

voidDateTrans(char*chDate,int*nYear,int*nMonth,int*nDay)

//1

{

*nYear=(chDate[0]-'0')*1000+(chDate[1]-'0')*100+(chDate[2]-'0')*10+chDate[3]

-'0';

*nMonth=(chDate[5]-'0')*10+chDate[6]-'0';

*nDay=(chDate[8]-'0')*10+chDate[9]-'0';

}

intIsLeapYear(intnYear)

//2

{

if(nYear%4==0)

return1;

el

return0;

}

intGetWeekOfFirstday(intnYear)

//3

{

if(nYear>2000)

return((nYear-2001)*365+(nYear-2001)/4+1)%7;

elif(nYear<2000)

return6-((2000-nYear)*365+(2000-nYear)/4)%7;

el

return6;

}

intGetWeek(intnYear,intnMonth,intnDay,intnWeekOfFirstday)

//4

{

intnDaysYear[]={31,28,31,30,31,30,31,31,30,31,30,31};

intnDaysLeapYear[]={31,29,31,30,31,30,31,31,30,31,30,31};

inti,sum=0;

if(nYear%4==0)

{

for(i=0;i<(nMonth-1);i++)

{

sum+=nDaysLeapYear[i];

}

return(sum+nDay+nWeekOfFirstday-1)%7;

}

el

{

for(i=0;i<(nMonth-1);i++)

{

sum+=nDaysYear[i];

}

return(sum+nDay+nWeekOfFirstday-1)%7;

}

}

voidPrintCalendar(intnWeek,intnDay,intnMonthDays,char*chDate)

//5

{

inti,j;

printf("thecalenderofthismonthasfollowing:n");

printf("*********************************n");

printf("SUNMONTUEWENTHUFRISTAn");

for(i=1,j=1;j<=nMonthDays;i++)

{

if(i<=nWeek+1)

printf("");

el

{

printf("%4d",j);

j++;

}

if(i%7==0)

printf("n");

}

printf("n********************************n");

printf("OK!n");

}

main()

{

charchDate[11],i=0,j,isleapyear;

intnYear,nMonth,nDay;

intnWeekOfFirstday;

intnMonthDays;

intnWeek;

char*Week;

intnDaysYear[]={31,28,31,30,31,30,31,31,30,31,30,31};

intnDaysLeapYear[]={31,29,31,30,31,30,31,31,30,31,30,31};

printf("请输入你要查找的日期,如（20010101或2001.01.01:n或者是你

想要日历的月份:如（200001或2000.01）：n");

do{

scanf("%c",&chDate[i]);

i++;

}while(chDate[i-1]!='n');

if(i==11)

chDate[i-1]='0';

el

for(j=8;j<11;j++)

chDate[j]='0';

DateTrans(chDate,&nYear,&nMonth,&nDay);

//1

while(nYear<=0||nMonth<1||nMonth>12)

{

printf("查询年月chDate非法n");

return0;

}

nWeekOfFirstday=GetWeekOfFirstday(nYear);

//3

nWeek=GetWeek(nYear,nMonth,nDay,nWeekOfFirstday);

//4

isleapyear=IsLeapYear(nYear);

//2

if(isleapyear==1)

nMonthDays=nDaysLeapYear[nMonth-1];

elif(isleapyear==0)

nMonthDays=nDaysYear[nMonth-1];

if(i==11)

{

while(nDay<1||nDay>nMonthDays)

{

printf("查询日期chDate非法n");

return0;

}

switch(nWeek)

{

ca0:

Week="SUNDAY";

break;

ca1:

Week="MONDAY";

break;

ca2:

Week="TUESDAY";

break;

ca3:

Week="WEDNESDAY";

break;

ca4:

Week="THUESDAY";

break;

ca5:

Week="FRIDAY";

break;

ca6:

Week="SATERDAY";

break;

}

printf("Thisday(%s)is%sn",chDate,Week);

printf("OK!n");

}

el

PrintCalendar(nWeek,nDay,nMonthDays,chDate);//5

}