跪求~~C语言程序设计 万年历系统设计

1、模仿现实生活中的挂历
2、当前页以系统当前现实的月份为准，显示当前月的每一天（显示出日及对应的星期几）
3、当系统日期变更到下一月时，系统自动翻页到下一月

#include
#include

char* month_str[]={"January","February","March","April","May","June","July","August","September","October","November","December"};
char* week[]={"Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"};

int IsLeapYear(int year)
{
if((year%4==0&&year%100!=0)||(year%400==0))
return 1;
else
return 0;

}
int month_day(int year,int month)
{
int mon_day[]={31,28,31,30,31,30,31,31,30,31,30,31};
if(IsLeapYear(year)&&month==2)
return 29;
else
return(mon_day[month-1]);

}
int DaySearch(int year,int month,int day)
{
int c=0;
float s;
int m;
for(m=1;m c=c+month_day(year,m);
c=c+day;
s=year-1+(float)(year-1)/4+(float)(year-1)/100+(float)(year-1)/400-40+c;
return ((int)s%7);
}

int PrintAllYear(int year)
{
int temp;
int i,j;
printf("\n\n%d Calander\n",year);
for(i=1;i<=12;i++)
{
printf("\n\n%s(%d)\n",month_str[i-1],i);
printf("0 1 2 3 4 5 6 \n");
printf("S M T W T F S \n\n");
temp=DaySearch(year,i,1);
for(j=1;j<=month_day(year,i)+temp;j++)
{
if(j-temp<=0)
printf(" ");
else if(j-temp<10)
printf("%d ",j-temp);
else
printf("%d ",j-temp);

if(j%7==0)
printf("\n");
}
}
return 0;
}

int main()
{
int option,da;
char ch;
int year,month,day;
printf("Copyright @ 2005 TianQian All rights reserved!:):):)");
printf("\n\nWelcome to use the WanNianLi system!\n");

while(1)
{
printf("\nPlease select the service you need:\n");
printf("\n1 Search what day the day is");
printf("\n2 Search whether the year is leap year or not");
printf("\n3 Print the calander of the whole year");
printf("\n4 Exit\n");
scanf("%d",&option);

switch(option)
{
case 1:
while(1)
{
printf("\nPlease input the year,month and day(XXXX,XX,XX):");
scanf("%d,%d,%d,%c",&year,&month,&day);
da=DaySearch(year,month,day);
printf("\n%d-%d-%d is %s,do you want to continue?(Y/N)",year,month,day,week[da]);
fflush(stdin);
scanf("%c",&ch);
if(ch=='N'||ch=='n')
break;
}
break;
case 2:
while(1)
{
printf("\nPlease input the year which needs searched?(XXXX)");
scanf("%d",&year);
if(IsLeapYear(year))
printf("\n%d is Leap year,do you want to continue?(Y/N)",year);
else
printf("\n%d is not Leap year,do you want to continue(Y/N)?",year);
fflush(stdin);
scanf("%c",&ch);
if(ch=='N'||ch=='n')
break;
}
break;
case 3:
while(1)
{
printf("\nPlease input the year which needs printed(XXXX)");
scanf("%d",&year);
PrintAllYear(year);
printf("\nDo you want to continue to print(Y/N)?");
fflush(stdin);
scanf("%c",&ch);
if(ch=='N'||ch=='n')
break;
}
break;
case 4:
fflush(stdin);
printf("Are you sure?(Y/N)");
scanf("%c",&ch);
if(ch=='Y'||ch=='y')
exit(0);
break;
default:
printf("\nError:Sorry,there is no this service now!\n");
break;
}

}

return 0;
}

以下程序来源《c精粹（第2版）》 #include "stdio.h" #include "stdlib.h" long int f(int year,int month) { if(month<3) return year-1; else return year; } long int g(int month) { if(month<3) return month+13; else return month+1; } long int n(int year,int month,int day) { return 1461l*f(year,month)/4+153l*g(month)/5+day; } int w(int year,int month,int day) { return(int)((n(year,month,day)%7-621049l%7+7)%7); } int date[12][6][7]; int day_tbl[ ][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}}; main() {int sw,leap,i,j,k,wd,day; int year; char title[]="sun mon tue wed thu fri sat"; clrscr(); system("cls"); printf("please input the year whose calendar you want to know: "); scanf("%d%*c",&year); sw=w(year,1,1); leap=year%4==0&&year%100||year%400==0; for(i=0;i<12;i++) for(j=0;j<6;j++) for(k=0;k<7;k++) date[i][j][k]=0; for(i=0;i<12;i++) for(wd=0,day=1;day<=day_tbl[leap][i];day++) { date[i][wd][sw]=day; sw=++sw%7; if(sw==0) wd++; } printf("\n|==================the calendar of year %d =====================|\n|",year); for(i=0;i<6;i++) { for(wd=0,k=0;k<7;k++) wd+=date[i][5][k]+date[i+6][5][k]; wd=wd?6:5; printf("%2d %s %2d %s |\n|",i+1,title,i+7,title); for(j=0;j<wd;j++) { printf(" "); for(k=0;k<7;k++) if(date[i][j][k]) printf("%4d",date[i][j][k]); else printf(" "); printf(" "); for(k=0;k<7;k++) if(date[i+6][j][k]) printf("%4d",date[i+6][j][k]); else printf(" "); printf(" |\n|"); } } puts("=================================================================|"); puts("\n press any key to quit..."); getch(); }