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1、C语言程序设计 万年历程序#includestdio.h int mon_day=31,28,31,30,31,30,31,31,30,31,30,31; int judge(int year,int month) if(month=1|month=3|month=5|month=7|month=8|month=10|month=12) return(1); else if(month=2) if(year%4!=0|year%100=0&year%400!=0) return(2); else return(3); else return(4); void show2 int year,i,
2、j,a,n,m,k; char * p; char * week=Sun,Mon,Tue,Wed,Thu,Fri,Sat; char*month=January,February,March,April,May,June,July,August,September,October,November,December; printf(please inter the year:); scanf(%d,&year); printf(n); printf(the calendar of the year%d.,year); printf(n); a=(year+(year-1)/4-(year-1)
3、/100+(year-1)/400)%7; for(i=0;i12;i+) n=judge(year,i+1); p=month+i; printf(%sn,*p); printf(n); for(j=0;j7;j+) p=week+j; printf(%6s,*p); printf(n); for(k=0;ka;k+) printf( ); for(m=1;m32;m+) printf(%6d,m); if(a+m)%7=0) printf(n); if(n=1&m=31) break; else if(n=2&m=28) break; else if(n=3&m=29) break; el
4、se if(n=4&m=30) break; a=(a+m)%7;/*计算出下个月的第一天是星期几*/ printf(n); printf(*); printf(n); void show printf(*n); printf(1.某年某月某日是星期几n2.是否闰年n3.某年某月的最大天数该月日历n5.退出n); printf(*n); int show1(int y,int m,int d) int i,R,sum=0; for(i=0;i2) sum=sum+1; R=(5+(y+1)+(y-1)/4-(y-1)/100+(y-1)/400+sum)%7; if(R=0) R=7; n4.
5、打印 return R; int leap(int y) if(y%4 = 0 &y%100 != 0)|(y%400 = 0) return 1; else return 0; int max_day(int y,int m) int X; if(leap(y)=1&m=2) X=29 ;/printf(该年该月最大天数:29); else X=mon_daym-1;/printf(%d,mon_daym-1); return X; void main int year,month,day,i; F: show; printf(请选择：); scanf(%d,&i); switch(i) c
6、ase 1: printf(请输入年、月，日：); scanf(%d%d%d,&year,&month,&day); printf(%d-%d-%d是星期%dn,year,month,day,show1(year,month,day);break; case 2: printf(请输入年份：); scanf(%d,&year); if(leap(year)=1) printf(该年是闰年.n); else printf(该年不是闰年n);break; case 3: printf(请输入年、月：); scanf(%d%d,&year,&month); printf(该月最大天数：%d,max_day(year,month); printf(n);break; case 4:show2;break; case 5:return 0;break; goto F;
