万年历C语言设计

1、万年历的设计：要求:模仿现实生活中的挂历，能够显示年历、月历、日历，并具备退出功能。当前页以系统当前日期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)。当系统日期变到下一月时,系统自动翻页到下一月。万年历的程序流程图： 主要程序流程图:Memu-slect()=1Printf(“输入年月日计算星期”)开始Memu-slect()=2Memu-slect()=3Memu-slect()=4Printf(“输入年月日计算星期”)Printf(“输入年月日计算星期”)Printf(“输入年月日计算星期”)结束 具体对于月份和年份的程序图如下: 上图为计算星期方法 上图为打印日历程序图 万年历

2、的设计的程序源代码：#include <stdio.h>#include <stdlib.h>#include <ctype.h>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);while(1)if(month>12|month<1)|(day>31|day<1) printf("输入错误，重新输入"); scanf(&

3、quot;%d%d%d",&year,&month,&day);else break;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

4、;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;switch(S)case 1:printf("星期一n");break;case 2:printf("

5、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 g()int i,j=1,k=1,a,b,month,year;printf("n输入年月:n");scanf("%d%d",&

6、;year,&month);while(1)if(month>12|month<1) printf("输入错误，重新输入"); scanf("%d%d",&year,&month);else break;b=days_month(month,year);a=firstday (month,year);printf("*n");printf(" Sun Mon Tue Wed Thu Fri Sat n");if(a=7)for(i=1;i<=b;i+)printf(&quo

7、t;%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 leap (int year)if(year%4=0&&year%100!=0|year%400=0)return 1;else

8、return 0;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;int firstday(int month,int year)int W;W=(1+2*month+3*(month+1)/5+year+year/4+yea

9、r/400-year/100)%7+1;return W;void h()int i,j=1,k=1,a,b,month,year,g;printf("n输入任意年:n");scanf("%d",&year);for(g=0;g<=11;g+)month=g+1;b=days_month(month,year);a=firstday (month,year);printf("%d月n",month);printf("*n");printf(" Sun Mon Tue Wed Thu Fri

10、Sat n");if(a=7)for(i=1;i<=b;i+)printf("%4d",i);if(i%7=0)printf("n");j=1;k=1;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");void main()for(;)sw

11、itch(menu_select()case 1:printf("输入年月日计算星期几n");f();break;case 2:printf("打印任意日历n");g();break;case 3:printf("打印任意年历n");h();break;case 4:printf("谢谢使用!n");exit(0);int menu_select()char S;int cn;printf("1.输入年月日计算星期几n");printf("2.打印任意月历n");printf("3.打印