某人从1990年1月1日起开始三天打鱼两天晒网问这个人在以后的某一天中是打鱼还是晒网\\程序如何改?

[mirroatl207]

//中国有句俗语叫三天打鱼两天晒网。
//某人从1990年1月1日起开始三天打鱼两天晒网
//问这个人在以后的某一天中是打鱼还是晒网。
int days(struct date day);

struct date{
	int year;
	int month;
	int day;
};

int _tmain(int argc, _TCHAR* argv[])
{
	struct date today,term;
	int yearday,year,day;
	printf("Enter year/month/day:");
	scanf("%d%d%d",&today.year,&today.month,&today.day);
	term.month = 12;
	for(yearday = 0 , year = 1990 ; year < today.year;year++)
	{
		term.year = year;
		yearday += days(term);
	}
	yearday += days(today);
	day = yearday%5;
	if(day > 0 && day < 4)
		printf("he was fishing at that day.\n");
	else
		printf("he was sleeping at that day.\n");
	return 0;
}

int days(struct date day)
{
	static int day_tab[2][13] = {
		{0,31,28,31,20,31,30,31,31,30,31,30,31},
		{0,31,29,31,30,31,30,31,31,30,31,30,31}
	};
	int i,lp;
	lp = day.year % 4 == 0 && day.year%100 != 0 || day.year % 400 == 0;
	for(i = 1 ; i < day.month ; i++)
		day.day += day_tab[lp][i];
	return day.day;
}

[mujiok2003]

每5天一个周期,就跟一周7天是一回事.

diff(base, then) % 5

[logiciel]

在以下这行: term.month = 12; 的前面或后面要增加: term.day = 1; 如果要按提示格式(year/month/day)输入,以下这行: scanf("%d%d%d",&today.year,&today.month,&today.day); 要改为: scanf("%d/%d/%d",&today.year,&today.month,&today.day);

[hui211314ddhui]

《程序员实用算法》--"时间与日期"章节

[赵4老师]

仅供参考

#include <afxdisp.h>
#include <stdio.h>
#include <stdlib.h>
int main(int argc, TCHAR* argv[]) {
    COleDateTime t;
    COleDateTimeSpan ts;
    CString s,fmt;
    int nYear;
    int nMonth;
    int nDay;
    int nHour;
    int nMin;
    int nSec;
    int lDays;
    int nHours;
    int nMins;
    int nSecs;
    int i,N;
    // initialize MFC and print and error on failure
    if (!AfxWinInit(::GetModuleHandle(NULL), NULL, ::GetCommandLine(), 0)) {
        printf("Fatal Error: MFC initialization failed\n");
        return 1;
    }
    if (argc<13) {
        printf("Usage:%s sYYYY sMM sDD shh smm sss pDD phh pmm pss n {SQL|YYYY|YY}\n",argv[0]);
        return 2;
    }
    if (stricmp(argv[12],"SQL")==0) fmt="%Y-%m-%d %H:%M:%S";
    else if (stricmp(argv[12],"YYYY")==0) fmt="%Y%m%d %H%M%S";
    else if (stricmp(argv[12],"YY")==0) fmt="%y%m%d %H%M%S";
    else {
        printf("Usage:%s sYYYY sMM sDD shh smm sss pDD phh pmm pss n {SQL|YYYY|YY}\n",argv[0]);
        return 3;
    }
    nYear =atoi(argv[ 1]);
    nMonth=atoi(argv[ 2]);
    nDay  =atoi(argv[ 3]);
    nHour =atoi(argv[ 4]);
    nMin  =atoi(argv[ 5]);
    nSec  =atoi(argv[ 6]);
    lDays =atoi(argv[ 7]);
    nHours=atoi(argv[ 8]);
    nMins =atoi(argv[ 9]);
    nSecs =atoi(argv[10]);
    N     =atoi(argv[11]);
    if (N<=0) {
        printf("Usage:%s sYYYY sMM sDD shh smm sss pDD phh pmm pss n {SQL|YYYY|YY}\n",argv[0]);
        return 4;
    }
    t=COleDateTime( nYear, nMonth, nDay, nHour, nMin, nSec);
    ts=COleDateTimeSpan( lDays, nHours, nMins, nSecs );
    for (i=1;i<=N;i++) {
        s=t.Format(fmt);
        printf("%08d %s\n",i,s);
        t=t+ts;
    }
    return 0;
}