简单万年历

来源：互联网发布：路易斯威廉姆斯数据编辑：程序博客网时间：2024/04/27 01:02

功能：输入年份，输出全年十二个月份，输入年月，输出当年的当前月份，输入年月日，输出当年当前月份，并将日期高亮，输入“+”查看下月日历，“-”查看上月日历

就算某月某天是星期几用的公式是 “泽勒一致性”，也叫“蔡勒公式”

#include <stdio.h>#include <stdlib.h>#include <windows.h>//判断每个月的第一天是星期几，int judgeFirstDate(int year, int m, int q){    if(m == 1 || m == 2)    {        m += 12;//如果月份为1，2，则表示为去年的13，14月，年份也改为去年        --year;    }    int j = year / 100;//j表示世纪    int k = year % 100;//k表示本世纪的第几年    int h = (q + 26*(m+1)/10 + k + k/4 + j/4 + 5*j) % 7;//h=0为周六，h=1为周日，依次类推    return h;}//处理周几，把h=0为周六改为h=0为周日，把h=1为周日改为h=1为周一，依次类推int judgeWeek(int week){    if(!week)        return 6;    else        return --week;}//把输入的字符串转换为数字年份void input(char* cTime, int* year, int* month, int* day){    int len = strlen(cTime);    if(cTime[0] == '+')    {        ++(*month);        return;    }    else if(cTime[0] == '-')    {        --(*month);        return ;    }    *year = *month = *day = 0;    *year = atoi(cTime);    if(len >= 6)        *month = atoi(cTime+5);    if(len >= 8)        *day = atoi(cTime+7);}//判断是不是闰年int isLeapYear(int year){    if((year%400 == 0) || (year%4 == 0 && year%100 != 0))        return 1;    return 0;}//输出月份最上边的哪个导航void outputWeek(){    printf("Sunday    Monday    Tuesday   Wednesday Thursday  Friday    Saturday\n");}//判断某年某个月份有几天int monthDay(int year, int month){    int judge = isLeapYear(year);    switch(month)    {    case 1: case 3: case 5: case 7: case 8: case 10: case 12:        return 31; break;    case 4: case 6: case 9: case 11:        return 30; break;    case 2:        return judge == 1 ? 29 : 28;        break;    }    return 0;}//输出某年的某个月void outputOneMonth(int year, int month, int day){    int i;    int dayNum = monthDay(year,month);    int week = judgeFirstDate(year,month,1);    week = judgeWeek(week);    outputWeek();    for(i = 0; i < week; ++i)        printf("          ");    for(i = 1; i <= dayNum; ++i)    {        if(day == i) SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),                                             FOREGROUND_GREEN | FOREGROUND_INTENSITY);        printf("%-10d",i);        if(day == i) SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),                        FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE);        if((week+1)%7 == 0)            printf("\n");        ++week;    }    if(week %7 != 0)        printf("\n");}//输出一年的所有月份void outputAllMonth(int year){    int i;    for(i = 1; i <= 12; ++i)    {        outputOneMonth(year,i,0);        printf("\n");    }}int main(){    int year,month,day;    char cTime[11];    while(fgets(cTime,11,stdin))    {        //读入数据        input(cTime,&year,&month,&day);        printf("%d",year);        if(month == 0)        {            printf("\n");            //输出一年的所有月份            outputAllMonth(year);        }        else        {            printf(".%d",month);            if(day != 0)                printf(".%d",day);            printf("\n");            //输出某个月份            outputOneMonth(year,month,day);        }        printf("+:last month\n-:next month\n");    }    return 0;}

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