万年历（C语言编程）

#include<stdioh>

#include<timeh>

int leap (int year)//判断闰年

{

if(year%4==0&&year%100!=0||year%400==0)

return 1;

else return 0;

}

int days_month (int month,int year)//判断月

{

if(month==1||month==3||month==5||month==7||month==8||month==10||month==12)

return 31;

if(month==4||month==6||month==9||month==11)

return 30;

if(month==2&&leap(year)==1) return 29;

else return 28;

}

int firstday(int month,int year)//判断年

{

int w;

w=(1+2month+3(month+1)/5+year+year/4+year/400-year/100)%7+1;

return w;

}

main()

{

//调用系统时间

time_t tval;

struct tm now;

tval = time(NULL);

now = localtime(&tval);

printf("现在时间: %4d年 %d月 %02d日 %d:%02d:%02d\n", now->tm_year+1900, now->tm_mon+1, now->tm_mday,

now->tm_hour, now->tm_min, now->tm_sec);

//调用结束

int i,j=1,k=1,a,b,month,year;

b=days_month(now->tm_mon+1,now->tm_year+1900);

a=firstday (now->tm_mon+1,now->tm_year+1900);

printf(" Sun Mon Tue Wed Thu Fri Sat \n");

if(a==7)

{

for(i=1;i<=b;i++)

{

printf("%4d",i);

if(i%7==0)

{

printf("\n");

}

}

}

if(a!=7)

{

while (j<=4a)

{

printf(" ");

j++;

}

for(i=1;i<=b;i++)

{

printf("%4d",i);

if(i==7k-a)

{

printf("\n");

k++;

}

}

}

printf("\n");

}

#include <stdioh>

int leap (int year)

{if(year%4==0&&year%100!=0||year%400==0) //判断是否是闰年

return 1;

else return 0;

}

int days_month (int month,int year) //判断大月和小月

{

if(month==1||month==3||month==5||month==7||month==8||month==10||month==12) //找出大月

return 31;

if(month==4||month==6||month==9||month==11) //找出小月

return 30;

if(month==2&&leap(year)==1) return 29; //判断二月是29天还是29天

else return 28;

}

int firstday(int month,int year)

{int w;

w=(1+2month+3(month+1)/5+year+year/4+year/400-year/100)%7+1; //判断每个月开始的第一天是星期几

return w;

}

main()

{int i,j=1,k=1,a,b,month,year;

printf("\n input month and year:\n");

scanf("%d%d",&month,&year); //输入月和年

b=days_month(month,year);

a=firstday (month,year);

printf(" Sun Mon Tue Wed Thu Fri Sat \n"); //输出对应当月的日历

if(a==7)

{for(i=1;i<=b;i++)

{printf("%4d",i);

if(i%7==0)

{printf("\n");

}

}

}

if(a!=7)

{while (j<=4a)

{printf(" ");

j++;

}

for(i=1;i<=b;i++)

{printf("%4d",i);

if(i==7k-a)

{printf("\n");

k++;

}

}

}

printf("\n");

}

程序直接输入年份和月份，打印对应日历。

一年12个月是固定的，我就不写单独输入年份打印月份了。你想就把我月份数组打印一遍好了。

#include<timeh>

#include<malloch>

enum MONTH{January=1,February,March,April,May,June,July,August,September,October,November,December};

struct tm  getDate(int year,int mon);

void printTime(time_t theTime,int year);

int main()

{

    enum MONTH mon;

    time_t theTime;

    struct tm date;

    int year,m;

    while(1)

    {

        printf("输入任意年份及月份：\n");

        scanf("%d%d",&year,&m);

        if(m<1 || m>12)

        {

            printf("月份超出范围，重新输入！\n");

            continue;

        }

        mon=m;

        break;

    }

    date=getDate(year,mon);

    theTime=mktime(date);//从1900年至此的秒数

    printTime(theTime,year);

    return 0;

}

struct tm  getDate(int year,int mon)

{

    struct tm date=(struct tm )malloc(sizeof(struct tm));

    date->tm_sec=0;

    date->tm_min=0;

    date->tm_hour=0;

    date->tm_year=year-1900;

    date->tm_mon=mon-1;

    date->tm_mday=1;

    date->tm_yday=0;

    return date;

};

void printTime(time_t theTime,int year)

{

    int y,m,wday,i,j;

    char wd[7][7]={"星期日","星期一","星期二","星期三","星期四","星期五","星期六"};

    struct tm date;

    date =localtime(&theTime);

    y=date->tm_year+1900;

    m=date->tm_mon+1;

    wday=date->tm_wday;

    printf("\n------------------开始生成日历----------------------\n\n");

    printf("                   %d年%02d月\n",y,m);

    i=0;

    for(j=0;j<7;j++)

    {

        printf("%s ",wd[wday++]);

        if(wday>6)

            wday=0;

    }

    printf("\n");

    while(1)

    {

        if(date->tm_mon+1>m)

        {

            printf("\n");

            break;

        }

        printf(" %02d日  ",date->tm_mday);

        if(++i==7)

        {

            printf("\n");

            i=0;

        }

        theTime+=246060;

        date =localtime(&theTime);

    }

}

//我写的代码，我自己改吧。当年水平有限，忘了考虑闰年，楼主莫怪

没有纯c环境，不知道还有没有错

#include <stdioh>

#include <timeh>

int days[]={0,31,59,90,120,151,181,212,243,273,304,334,365};

int month[]={31,28,31,30,31,30,31,31,30,31,30,31};

char weekday[7][7]={"一","二","三","四","五","六","七"};

char weeks[][10]={"Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"};

//判闰年

inline int leap(int year)

{

return (year%4==0&&year%100!=0)||year%400==0;

}

//判合法性

inline int legal(int y,int m,int d){

if(m<0||m>12)

return 0;

if(m==2)

return d>0 && d<=28+leap(y);

return d>0 && d<=month[m-1];

}

int week(int y,int m,int d)

{

int day = days[m-1]+d-1+(m>2leap(y):0);

return (y-1+(y-1)/4-(y-1)/100+(y-1)/400+day)%7;

}

void print()

{

puts("1Week(查询某天是星期几)");

puts("2Month(打印某月日历)");

puts("3Calendar(打印某年日历)");

puts("4Exit(退出)");

}

void printmonth(int y,int m)

{

int i,j,w;

w=(week(y,m,1)+1)%7;

puts(" SUN MON TUE WED THU FRI SAT");

for(i=1;i<=w;i++)

printf("%5c",' ');

for(j=i;j<i+month[m-1]+(m==2&&leap(y));j++)

{

printf("%5d",j-i+1);

if(j%7==0)

puts("");

}

if((j-1)%7)

puts("");

}

int main()

{

int i,y,m,d,c;

char op[5],s[105];

time_t current = time(NULL);

tm date = localtime(&current);

print();

while(scanf("%d",&c)==1)

{

if(c==1)

{

strftime(s,100,"%Y %m %d",date);

do

{

printf("请输入年月日（例如：%s）\n",s);

scanf("%d%d%d",&y,&m,&d);

printf("%44d年%22d月%22d日是星期%s，是否继续查询（Y/N）？\n",y,m,d,weekday[week(y,m,d)]);

scanf("%s",op);

}while(op[0]=='Y'||op[0]=='y');

}

if(c==2)

{

strftime(s,100,"%Y %m",date);

do

{

printf("请输入要打印的月份（例如：%s）\n",s);

scanf("%d%d",&y,&m);

printf(" %44d年%22d月\n",y,m);

printmonth(y,m);

puts("是否继续打印（Y/N）？");

scanf("%s",op);

}while(op[0]=='Y'||op[0]=='y');

}

if(c==3)

{

strftime(s,100,"%Y",date);

do

{

printf("请输入要打印的年份（例如：%s）\n",s);

scanf("%d",&y);

printf(" %44d\n",y);

for(i=1;i<=12;i++)

{

printf(" %22d月\n",i);

printmonth(y,i);

}

puts("是否继续打印（Y/N）？");

scanf("%s",op);

}while(op[0]=='Y'||op[0]=='y');

}

if(c==4)

{

puts("是否要真的退出（Y/N）？");

scanf("%s",op);

if(op[0]=='Y'||op[0]=='y')

return 0;

}

print();

}

}

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