万年历系统——C语言完整版

#include <stdio.h>#include <stdlib.h>#include <ctype.h>int leap (int year) ;//判断是否为闰年int days_month (int month,int year) ;//判断这个月的天数int menu_select();/*void f(){int day,month,year,sum,leap,S;printf("\n请输入年月日\n");scanf("%d%d%d",&year,&month,&day);switch(month){case 1:sum=0;break;case 2:sum=31;break;case 3:sum=59;break;case 4:sum=90;break;case 5:sum=120;break;case 6:sum=151;break;case 7:sum=181;break;case 8:sum=212;break;case 9:sum=243;break;case 10:sum=273;break;case 11:sum=304;break;case 12:sum=334;break;default:printf("data error");break;}sum=sum+day;if(year%400==0||(year%4==0&&year%100!=0))leap=1;else leap=0;if(leap==1&&month>2)sum++;S=(year-1+(year-1)/4-(year-1)/100+(year-1)/400+sum)%7; //X表示年份,C是该年份元旦开始到这一日的天数//S/7的系数就是星期数//01printf("%d",S);switch(S){case 1:printf("星期一\n");break;case 2:printf("星期二\n");break;case 3:printf("星期三\n");break;case 4:printf("星期四\n");break;case 5:printf("星期五\n");break;case 6:printf("星期六\n");break;case 0:printf("星期日\n");break;}}*/int Leap(int year){ int leap;if(year%400==0||(year%4==0&&year%100!=0))leap=1;else leap=0;return leap;}int SU(int sum,int year){int S;S=(year-1+(year-1)/4-(year-1)/100+(year-1)/400+sum)%7;return S;}int Sum(int year,int month,int day=1){int sum,leap;switch(month){case 1:sum=0;break;case 2:sum=31;break;case 3:sum=59;break;case 4:sum=90;break;case 5:sum=120;break;case 6:sum=151;break;case 7:sum=181;break;case 8:sum=212;break;case 9:sum=243;break;case 10:sum=273;break;case 11:sum=304;break;case 12:sum=334;break;default:printf("data error");break;}sum=sum+day;leap=Leap(year);if(leap==1&&month>2)sum++;return sum;}void Print(int S){switch(S){case 1:printf("星期一\n");break;case 2:printf("星期二\n");break;case 3:printf("星期三\n");break;case 4:printf("星期四\n");break;case 5:printf("星期五\n");break;case 6:printf("星期六\n");break;case 0:printf("星期日\n");break;}}void Fun1(){int day,month,year,sum,S;printf("\n请输入年月日\n");scanf("%d%d%d",&year,&month,&day);sum=Sum(year,month,day);S=SU(sum,year);Print(S);}void Fun2(){int i,j=1,k=1,a,b,month,year,sum;printf("\n 输入年月:\n");scanf("%d%d",&year,&month);b=days_month(month,year);sum=Sum(year,month);a=SU(sum,year);printf("*************************************\n");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<=4*a){printf(" ");j++;}for(i=1;i<=b;i++){printf("%4d",i);if(i==7*k-a){printf("\n");k++;}}}printf("\n*************************************\n");printf("\n");}int days_month (int month,int year){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;}void main(){for(;;){switch(menu_select()){case 1:printf("输入年月日计算该月第一天是星期几\n");Fun1();break;case 2:printf("打印任意日历\n");Fun2();break;case 3:printf("谢谢使用!\n");exit(0);}}}int menu_select(){ system("cls");char s;int cn;printf("1. 输入年月日计算该月第一天是星期几\n");printf("2. 打印任意日历\n");printf("3.谢谢使用! \n");printf("input 1-3:");do {s=getchar();cn=(int)s-48;}while(cn<0||cn>6);return cn;}。

#include"reg51.h"sbit Led1 = P0^0;sbit Led2 = P0^1;sbit Led3 = P0^2;sbit Led4 = P0^3;sbit Led5 = P0^4;sbit SPK = P1^1;sbit Key4 = P1^7;sbit Key2 = P1^5;sbit Key1 = P1^4;void DelayTime(unsigned int DTime){unsigned int uiCnt;for(uiCnt = 0;uiCnt < DTime*50;uiCnt++);}code unsigned char LedSeg[10] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};main(){unsigned char Second = 59,Minute = 59,Month=29,Day=29,Year=11,Hour=23;unsigned int wCnt = 0;unsigned char BLed = 0,ucLed1 = 1,ucLed2 = 2,ucLed3 = 3,ucLed4 = 4;bit FlashBit = 0; //0: 不闪烁；1：闪烁unsigned char Shift = 0;while(1){/*计时*/if(wCnt > 200){wCnt = 0;if(++Second > 59){ Second = 0;if(++Minute > 59){ Minute = 0;if(++Hour > 23){ Hour = 0;if(Month==1||Month==3||Month==5||Month==7||Month==8||Month==10||Month==12){ if(++Day > 31){ Day = 01 ;if(++Month>12){ Month=01;Year++;}}}else if(Month==2){if(Year%4==0&&Year%100!=0||Year%400==0){if(++Day>29){ Day = 01 ;if(++Month>12){ Month=01;Year++;}}}else{if(++Day>28){ Day = 01 ;if(++Month>12){ Month=01;Year++;}}}}else{if(++Day > 30){ Day = 01 ;if(++Month>12){ Month=01;Year++;}}}}}}}switch(++wCnt % 5){case 0: //显示秒的个位Led2 = 1; //定位显示数码管Led3 = 0;Led4 = 0;Led5 = 0;Led1 = 0;if(FlashBit && Shift == 0){if(wCnt < 100)P2 = LedSeg[ucLed1];//亮elseP2 = 0;//灭}elseP2 = LedSeg[ucLed1];break;case 1:P0 &= 0xe0;Led3 = 1;if(FlashBit && Shift == 1){if(wCnt < 100)P2 = LedSeg[ucLed2];//亮elseP2 = 0;//灭}elseP2 = LedSeg[ucLed2];break;case 2:P0 &= 0xe0;Led4 = 1;if(FlashBit && Shift == 2){if(wCnt < 100)P2 = LedSeg[ucLed3];//亮elseP2 = 0;//灭}elseP2 = LedSeg[ucLed3];break;case 3:P0 &= 0xe0;Led5 = 1;if(FlashBit && Shift == 3){if(wCnt < 100)P2 = LedSeg[ucLed4];//亮elseP2 = 0;//灭}elseP2 = LedSeg[ucLed4];break;case 4:P0 &= 0xe0;Led1 = 1;P2 = LedSeg[BLed];break;}DelayTime(5);if(Key4 == 0){DelayTime(10);while(Key4 == 0);if(!FlashBit){BLed++;if(BLed > 2)BLed = 0;}/*如果切换放置这个位置，会出现什么结果？*/ }if(Key1 == 0){DelayTime(10);while(Key1 == 0);FlashBit = ~FlashBit;}if(Key2 == 0){DelayTime(10);while(Key2 == 0);Shift++;if(Shift > 3)Shift = 0;}switch(BLed){case 0:ucLed1 = Second%10;ucLed2= Second/10;ucLed3= Minute%10;ucLed4= Minute/10;break;case 1:ucLed1 = Hour%10;ucLed2=Hour/10;ucLed3 = Day%10;ucLed4= Day/10;break;case 2:ucLed1 = Month%10;ucLed2 = Month/10;ucLed3 = Year%10;ucLed4= Year/10;break;}} }。

万年历的制作，C语言编写！！以下是代码：#include<iostream>#include<cmath>using namespace std;int i,c,day,year,k,a[50];void f1(int x) //大月{for( i=0;i<50;i++)a[i]=33;for(i=k-1;i>=0;i--)a[i]='\000'; //1 号前均为空格for(i=k;i<31+k;i++)a[i]=a[i-1]+1;}void f2(int x) //小月{for( i=0;i<50;i++)a[i]=33;for(i=k-1;i>=0;i--)a[i]='\000';for(i=k;i<30+k;i++)a[i]=a[i-1]+1;}void f3(int x) //闰年二月{for( i=0;i<50;i++)a[i]=33;for(i=k-1;i>=0;i--)a[i]='\000';for(i=k;i<29+k;i++)a[i]=a[i-1]+1;}void f4(int x) //非闰年二月{for( i=0;i<50;i++)a[i]=33;for(i=k-1;i>=0;i--)a[i]='\000';for(i=k;i<28+k;i++)a[i]=a[i-1]+1;}void g(int y[],int z) // 输出日历表{cout<<" 日"<<'\t'<<" 一"<<'\t'<<" 二"<<'\t'<<" 三"<<'\t'<<" 四"<<'\t'<<" 五"<<'\t'<<"六"<<endl;for(i=0;i<50;i++){if(a[i]==0)cout<<(char)a[i]<<'\t';if(a[i]!=0&&a[i]!=33)cout<<a[i]<<'\t';else ;if(i%7==0)cout<<endl;}cout<<endl<<endl<<endl;}int main(){int s,count=0;cout<<"请输入年份：";cin>>year;cout<<endl;c=year;for(s=1;s<=year;s++)if(((s-1)%4==0&&(s-1)%100!=0)||(s-1)%400==0)count++; day=365*c+count; //相差天数cout<<"*********************"<<year<<"年日历*********************";cout<<endl<<endl<<endl<<endl;k=(day%7+6)%7+1;cout<<"一月"<<endl<<endl;f1(k);g(a,50);if((year%4==0&&year%100!=0)||year%400==0){k=((day+31)%7+6)%7+1;cout<<"二月"<<endl<<endl;f3(k);g(a,50);day=day+31+29;}else //非闰年二月{k=((day+31)%7+6)%7+1;cout<<"二月"<<endl<<endl;f4(k);g(a,50);day=day+31+28;}k=(day%7+6)%7+1;cout<<"三月"<<endl<<endl;f1(k);g(a,50);k=((day+31)%7+6)%7+1;cout<<"四月"<<endl<<endl;f2(k);g(a,50);k=((day+31+30)%7+6)%7+1;cout<<"五月"<<endl<<endl;f1(k); g(a,50);k=((day+31+30+31)%7+6)%7+1;cout<<"六月"<<endl<<endl;f2(k);g(a,50);k=((day+31+30+31+30)%7+6)%7+1;cout<<"七月"<<endl<<endl;f1(k);g(a,50);k=((day+31+30+31+30+31)%7+6)%7+1;cout<<"八月"<<endl<<endl;f1(k);g(a,50);k=((day+31+30+31+30+31+31)%7+6)%7+1;cout<<"九月"<<endl<<endl;f2(k);g(a,50);k=((day+31+30+31+30+31+31+30)%7+6)%7+1;cout<<"十月"<<endl<<endl;f1(k);g(a,50);k=((day+31+30+31+30+31+31+30+31)%7+6)%7+1;cout<<"十一月"<<endl<<endl; f2(k);g(a,50);k=((day+31+30+31+30+31+31+30+31+30)%7+6)%7+1;cout<<"十二月"<<endl<<endl;f1(k);g(a,50);return 0;}。

C语言实训--万年历源代码# include#include#include#include#include# define YEAR 365int numday[2][12]={{31,28,31,30,31,30,31,31,30,31,30,31}, {31,29,31,30,31,30,31,31,30,31,30,31}};int leap(int year);int calday(int y,int m);int counterdays(int year,int month,int day);int week(int year,int month,int day);int eachyeartotal(int year,int month,int day);int maxDay(int y,int month);void print(int y,int m,int w);void festival (int year,int month,int day);int IsLeap(int y);int guanli(int i);void rili(int year,int month);int rili1();void rili2();void rili3();void rili4();void rili5();void fan();void show(int year,int month,int date,int sec,int mini,int hour);int main(){int i;printf("***************************************\n"); printf("1.查询日历，输入年份：\n");printf("2.查询该月日历及对应星期，输入年份和月份：\n"); printf("3.查询星期几及节日，输入年月日：\n");printf("4.距您输入日期还有多少天，输入日期：\n"); printf("5.通过键盘上下控制不同年月日:\n");scanf("%d",&i);guanli(i);return 0;}int guanli(int i){switch(i){case 1:rili1();return main();case 2:rili2();return main();case 3:rili3();return main();case 4:rili4();return main();case 5:rili5();return main();}return 0;}int rili1(){int year;int n,i;printf("输入年份：");scanf("%d",&year);printf("the calendar of the year%d\n",year);printf("\n");printf("=============================\n"); for(i=1;i<13;i++){printf(" %d月份\n",i);rili(year,i);}n = leap(year);return 0;}void rili2(){int year,month,w;printf("输入年月：");scanf("%d%d",&year,&month);w=calday(year,month);print(year,month,w);}void rili3(){int year,month,day,number;printf("输入年月日：");scanf("%d%d%d",&year,&month,&day);festival(year,month,day);number= week(year,month,day);printf("星期%d",number);}void rili4(){int year,month,day;printf("输入年月日：");scanf("%d%d%d",&year,&month,&day); eachyeartotal( year,month,day);counterdays(year,month,day);}void rili5(){int year,month,date,sec,mini,hour;fan();show(year,month,date,sec,mini,hour);}int leap(int year){int n=(year%4==0 && year%100!=0 || year%100!=0); return n;}void rili(int year,int month){int i,day,first_day,flag,year1,year2;int temp = 6;flag =leap(year);year1=year/100;year2=year%100;if(year>2000){year1=year1-20;day = year1/4;day+=(YEAR+24)*year1+YEAR*year2+(year2-1)/4;if(year>2000)day++;switch(month){case 1:day; break;case 2:day+=31;break;case 3:day+=59+flag;break;case 4:day+=90+flag;break;case 5:day+=120+flag;break;case 6:day+=151+flag;break;case 7:day+=181+flag;break;case 8:day+=212+flag;break;case 9:day+=243+flag;break;case 10:day+=273+flag;break;case 11:day+=304+flag;break;case 12:day+=334+flag;break;}day+=temp;first_day=day%7;}else{year1 = 20-1-year;year2=100-year2-1;day+=(YEAR+24)*year1+YEAR*year2+year2/4; switch(month){case 12:day+=31;break;case 11:day+=61;break;case 10:day+=92;break;case 9:day+=122;break;case 8:day+=153;break;case 7:day+=184;break; case 6:day+=214;break; case 5:day+=245;break; case 4:day+=275;break; case 3:day+=306;break; case 2:day+=334+flag;break; case 1:day+=365+flag;break; }day-=temp;day = day%7;first_day=(7-day)%7;}switch(month){case 1:case 2:month=28+flag;break; case 3:case 4:case 5:case 6:case 7:case 8:case 9:case 10:case 11:month=30;break; case 12:month =31;break;}for(i=1;i<4*first_day;i++) printf(" ");for(i=0;i<month;i++)< p="">{printf("%4d",i+1);if((first_day+i)%7==6)printf("\n");}printf("\n");printf("===============================\n");}///////////////////////////////////////////////////////////int counterdays(int year,int month,int day){int year1,days0,days1,month1,days,day1;time_t timep;struct tm*p;time(&timep);p=gmtime(&timep);year1=(1900+p->tm_year);month1=(1+p->tm_mon);day1=(p->tm_mday);days0=(year-1)*365 + (year-1)/4 - (year-1)/100 + (year-1)/400 +eachyeartotal (year,month,day);days1=(year1 - 1)*365+(year1-1)/4-(year1-1)/100 + (year1 - 1)/400 +eachyeartotal (year1,month1,day1);days=days0-days1;printf("\n今天距%d年%d月%d日还有%d天\n\n",year,month,day,days);return days;}int eachyeartotal(int year,int month,int day){int i,sum=0;for(i=1;i<month;i++)< p="">{sum+=maxDay(year,i);}sum+=day;return sum;}int IsLeap(int y){if(y%4==0 && y%100!=0 || y%400==0) return 1; else return 0;}int maxDay(int y,int month){int a[12]={31,28,31,30,31,30,31,31,30,31,30,31};if(IsLeap(y))a[1]=29;return a[month-1];}///////////////////////////////////////void festival (int year,int month,int day){if (month==1 && day==1) printf ("，这天是元旦");if (month==2 && day==14) printf ("，这天是情人节"); if (month == 3)switch(day){case 8:printf (",这天是妇女节"); break;case 12:printf (",这天是植树节");}if (month==1 && day==1) printf ("，这天是愚人节");if(month == 5)switch (day){case 1:printf("，这天是劳动节");break;case 4:printf(",这天是青年节");}if (month==6 && day==1) printf ("，这天是儿童节");if (month==7 && day==1) printf ("，这天是建党节");if (month==8 && day==1) printf ("，这天是建军节");if (month==9 && day==10) printf ("，这天是教师节");if (month==10 && day==1) printf ("，这天是国庆节");printf("\n");}int week(int year,int month,int day){int number = (year-1)+(year-1)/4 - (year-1)/100+(year-1)/400+eachyeartotal(year,month,day);number = number%7;return number;}/////////////////////////////////////////////void print(int y,int m,int w){int i,l;printf("Calendar %d-%02d\n",y,m);printf("---------------------\n");printf("Su Mo Tu We Th Fr Sa \n");printf("---------------------\n");for (i=0;i<w;i++)< p=""> printf(" ");if (IsLeap(y))l=1;elsel=0;for (i=1;i<=numday[l][m-1];i++) {printf("%-3d",i);w++;if (w%7==0)printf("\n");}if (w%7) printf("\n");printf("---------------------\n"); }int calday(int y,int m){int d=0,w;while (y>1910){if (IsLeap(y)) d+=366;else d+=365;y--;}while (m>1){ --m;d+=numday[0][m-1];}w=(d+1)%7;return w;}//////////////////////////////////////////void show(int year,int month,int date,int sec,int mini,int hour) {const char month_str[][4]={"","Jan","Feb","Mar","Apl", "May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};const int month_day[]={0,31,28,31,30,31,30,31,31,30,31,30,31};int i,j,wdays,mdays,days;for(i=1,days=0;i<year;i++)< p="">{if(leap(i))days += 366;}else{days += 365;}}for(i=1;i<month;i++)< p="">{if(i==2 && leap(year)){days+=29;}else{days+=month_day[i];}}printf(" %s.%d.%d %d:%d:%d \n",month_str[month],date,year,hour,mini,sec);printf(" 一二三四五六日\n");wdays = days % 7;for( j = 0; j < wdays; j++){printf(" ");}if(month == 2 && leap(year)){mdays=29;}else{mdays= month_day[month];}for(i=1;i<=mdays;i++){if( i > 1 && days % 7 == 0 ){printf("\n");}printf("%4d",i);days=days+1; }printf("\n---------------------------\n\n\n");}{time_t rawtime;struct tm *info;int year,month,date,sec,mini,hour; char ch;time ( &rawtime );info = localtime ( &rawtime );year =info->tm_year + 1900; month =info->tm_mon + 1;date =info->tm_mday;hour =info->tm_hour;mini =info->tm_min;sec =info->tm_sec;while(1){show(year,month,date,sec,mini,hour); printf("↑......上一年\n\n");printf("↓......下一年\n\n");printf("←....前一个月\n\n");pr intf("→....后一个月\n\n");printf("Esc.......退出\n\n");ch=getch();switch(ch){case 27://Ecs exit(0);case -32://Navigatorch=getch();if(ch==77){//Rightyear+=(month==12)?1:0;month=month%12+1;}else if(ch==75){year-=(month==1)?1:0; month=(month-2+12)%12+1; }else if(ch==72)year--;else if(ch==80)year++;system("cls");}}</month;i++)<></year;i++)<></w;i++)<></month;i++)<></month;i++)<>。

#include <stdio.h>#include<time.h> //调用当前时间的头文件#include <stdlib.h>//调用清屏函数的头文件//这是一个万年历的c程序。

void Today(int year,int month,int day)//输出是星期几的函数。

{int d=0,i;int week;int a[12]={31,29,31,30,31,30,31,31,30,31,30,31};int b[12]={31,28,31,30,31,30,31,31,30,31,30,31};if(year%4==0&&year%100!=0||year%400==0)//判断是否是闰年。

{for(i=1;i<month;i++)d=d+a[i-1];}else{for(i=1;i<month;i++)d=d+b[i-1];}d=d+day;week=(year-1)*365+(year-1)/4-(year-1)/100+(year-1)/400+d;//判断这一天是星期几的公式。

week=week%7;//判断这一天是星期几的公式。

当week=0,表示星期日。

//下面是输出星期。

switch(week){case 1:printf("\t%d 年%d 月%d 日是星期: 一",year,month,day);break;case 2:printf("\t%d 年%d 月%d 日是星期: 二",year,month,day);break;case 3:printf("\t%d 年%d 月%d 日是星期: 三",year,month,day);break;case 4:printf("\t%d 年%d 月%d 日是星期: 四",year,month,day);break;case 5:printf("\t%d 年%d 月%d 日是星期: 五",year,month,day);break;case 6:printf("\t%d 年%d 月%d 日是星期: 六",year,month,day);break;case 0:printf("\t%d 年%d 月%d 日是星期: 日",year,month,day);break;}printf("\n\n");}void Tomonth(int year,int month)//输入日历的函数{int week;int t=1;int d=0,i;int a[12]={31,29,31,30,31,30,31,31,30,31,30,31};int b[12]={31,28,31,30,31,30,31,31,30,31,30,31};//这个if和for是计算d的值，d表示到今天为止总共的天数。

#include "time.h" /*包含的头文件*/#include "stdio.h"#include "math.h"#include "windows.h"#include "conio.h"#define KEYNUMUp 0x48 /*宏定义*/#define KEYNUMDown 0x50#define KEYNUMLeft 0x4b#define KEYNUMRight 0x4dint eachyeartotal(int year,int month,int day>。

/*函数声明*/ int counterdays(int year,int month,int day>。

int nowtime(int year,int month,int day>。

int week(int year,int month,int day>。

int maxDay(int year,int month>。

int isleap(int year>。

void whatweek(int year,int month,int day>。

void display(int year ,int month>。

void display2(int year,int month>。

void display3(int year,int month,int day> 。

void setDay1(int year,int month,int day>。

void setDay2(int year,int month,int day>。

void setDay3(int year,int month,int day>。

void jieri(int month,int day>。

目录一引言 (2)二系统功能和数据说明 (3)一）功能简介 (3)二）程序中的数据说明 (3)三程序总体设计及流程图 (4)一）应用到的c语言 (4)二）程序的总框架 (5)四功能模块设计及调试 (5)一）算法说明 (5)1.总天数的算法 (5)2.计算输入日期是星期几 (6)3.对输入信息的汇总 (8)4..界面的控制 (10)二）调试结果 (11)五程序清单 (12)六结束语 (17)一引言通过大一上学期对C语言的学习，了解到了很多C语言的相关知识。

学习的过程有很多困惑但是当自己能够独立的看懂，能过独立的完成一个简单的程序时，心中就会收获无限的喜悦和成就感。

我可以里哟哦那个它看懂一些简单的程序，编写一些简单的计算程序，更多的是学会了一种思想——编程，它让我在去思考很多日常生活中的事物是怎么样通过一个个小小的函数实现功能的，激发我对探究的兴趣。

C语言是近年在国内外得到迅速推广应用的一种语言。

C语言功能丰富，表达能力强，使用灵活方便，应用面广，目标程序效率高，可移植性好，既具有高级语言的优点，又具有低级语言的许多特点。

因此，C语言特别适合于编写各种软件。

在这次的课程设计中我将把日常生活中最经常接触的——日期的查询利用C语言的程序编成一个简单的日历。

通过这个小小的日历可以实现很多功能。

在程序中你能看到很多熟悉的C语言关键字，同时也加入了很多自己课外了解到的一些关键字。

在不断的调试中最终才获得最为完整的程序。

接下来就是我的C 语言课程设计的具体内容来了二系统功能和数据说明（一）功能简介在我们的日常生活中能接触到很多不同类型的日历，在日历上我们通常希望它能简介明了的给我们最想要的日期信息。

在我的万年历当中，就是将日历，月历做的简单明了，很方便我们的使用。

下面是它要实现的一些基本功能：用C语言编写万年历1、输入年份，判断是否为闰年2、输入年月日，判断改日为星期几3、输入年份，打出12个月历，输入月份，打出该月的日历4、要求用多个函数实现[名称]万年历[修改]1、对输入的日期进行容错处理2、增加和修改为英文的月份和星期显示3、采用指针形式的weeks和month数组（二）程序中的数据说明①int days[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};这是定义的关于每个月天数的数组，根据大小月以及二月分的特殊情况将每个月的天数最为数组中的元素存入数组当中。