EEPW论坛

/* Note:Your choice is C IDE */
#include "stdio.h"
void screen();
void whatisit();
void leapyear();
void printyearday();
int IsLeapYear(int);
int whatisita(int,int);
int everymonth(int,int);
void printmonth(int,int);
void printmonthday();
char*week[]={"Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"};
void main()
{
	screen();
}
void screen()
{
	int n;  
    while(1)  
    { printf("  ID:2013304109\n");  
      printf("  万年历查询程序:\n");  
      printf("1.查询某年某月某日是星期几\n");  
      printf("2.查询某年是否是闰年
");  
      printf("3.打印某年的全年日历
");  
      printf("4.查询某月的最大天数
");  
      printf("5.退出
");  
      printf("请输入要查询的选项:");  
      scanf("%d",&n);  
      switch(n)  
      {  
        case 1:whatisit();break;  
        case 2:leapyear();break;  
        case 3:printyearday();break;  
        case 4:printmonthday();break;  
        case 5:return;  
        default:printf("你输入错误，请按要求输入!!!\n");break;  
      }  
    }  
}  
void whatisit()  
{  
    int y,m,d,s,k=1,sum,n,i;  
    char yn;  
    int a[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};  
    while(k)  
    {    printf("请依次输入年,月,日:\n");  
        scanf("%d,%d,%d",&y,&m,&d);  
        s=0;  
        for(i=1;i<m;i++)  
          s=s+a[i];  
          s=s+d;  
          if(IsLeapYear(y)&&m>2)s=s+1;  
          sum=s;  
          n=(y-1+(y-1)/4-(y-1)/100+(y-1)/400+sum)%7;  
          printf("这天是%s\n",week[n]);  
          printf("是否继续查询(Y/N)?");  
          scanf("%c",&yn);  
          getchar();  
          if(yn=='y'||yn=='Y')k=1;  
          else k=0;  
    }  
}  
  
int IsLeapYear(int year)  
{return (((year%4)==0 && (year%100)!=0) || ((year%400)==0));}  
  
void leapyear()  
{  
    int y,k=1;char yn;  
    while(k)  
    {  
        printf("请输入要查询的年份:\n");  
        scanf("%d",&y);  
        if(IsLeapYear(y))  
            printf("是闰年!\n");  
        else  
        printf("不是闰年!\n");  
        printf("是否继续查询(Y/N)?");  
        scanf("%c",&yn);  
        getchar();  
        if(yn=='y'||yn=='y')  
            k=1;  
        else k=0;  
    }  
}  
  
int whatisita(int y,int m)  
{  
    int n,i,sum;  
    int a[13]={0,31,28,31,30,31,30,31,31,30,31,30,31},s=0;  
    for(i=1;i<m;i++)  
        s=s+a[i];  
    if(IsLeapYear(y) && m>2)  
        s=s+i;  
        n=(y-1+(y-1)/4-(y-1)/100+(y-1)/400+sum)&7;  
    return n;  
}  
  
void printyearday()  
{  
    int y,value,sum,i,k=1;  
    char yn;  
    while(k)  
    {  
        printf("请输入查询日历的年份\n:");  
        scanf("%d",&y);  
        for(i=1;i<=12;i++)  
        {  
            printf("%d年%d月的信息:\n",y,i);  
            value=whatisita(y,i);  
            sum=everymonth(y,i);  
            printmonth(value,sum);  
            printf("\n");  
        }  
        printf("是否继续查询(Y/N)?");  
        scanf("%c",&yn);  
        getchar();  
        if(yn=='y'||yn=='y')  
            k=1;  
        else k=0;  
    }  
}  
  
int everymonth(int year,int month)  
{  
    int s,i;  
    static int a[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};  
    s=a[month];  
    if(IsLeapYear(year)&&month==2)  
        s=s+i;  
    return s;  
}  
  
void printmonthday()  
{  
    int y,m,value,k=1;char yn;  
    while(k)  
    {  
        printf("请输入查询的年份,月份\n:");  
        scanf("%d,%d",&y,&m);  
        value=everymonth(y,m);  
        printf("%d年%d月的最大天数为%d:\n",y,m,value);  
        printf("%c",&yn);getchar();  
        if(yn=='y'||yn=='y')  
            k=1;  
        else k=0;  
    }  
}  
  
void printmonth(int value,int sum)  
{  
    int n,i=0,j;  
    char*x[7]={"Sunday","Monday","Tuesday","Wenesday","Tursday",  
               "Friday","Saturday"};  
    for(j=0;j<7;j++)  
    {  
        printf("%s",x[j]);  
    }  
    printf("\n");  
    while(i<value)  
    {  
        printf(" ");  
        i++;  
    }  
    for(n=1;n<=7-value;n++)  
    printf("    %d",n);  
    while(n<=sum)  
    {  
        if((n+value-1)%7==0)  
        printf("\n");  
        if(n/10>0)  
        printf("    %d",n);  
        else  
        printf("    %d",n);  
        n++;  
    }  
}