万年历-C语言源代码.docx

#include #include #include #define str SUN MON TUE WED THU FRI SAT void menu(); /操作菜单 int leap(int year);/判断某年是不是闰年 int days_month(int year,int month);/返回某月的天数 int someday(int year,int month,int day);/计算某天是星期几 void search_month(int year,int month);/输出某月的日历 void search_someday(int year,int month,int day);/查询某日是星期几 int main()int i,year,month,day;int k1,k2,k3,k4;/用于判断输入的数据和操作是否正确，1代表正确，0代表错误 int a = 1;menu(); doprintf(请输入你要进行的操作(1-4):);scanf(%d,&i);getchar();switch(i)case 1:printf(请输入你要查询的年份：);scanf(%d,&year);for(a;a12|month1)printf(你输入的月份有误，请重新输入!n);printf(月份:);scanf(%d,&month);if(month12)k1=1;else k1=0; search_month(year,month);printf(-*-nnn);break;case 3:printf(请输入你要查询的日期n);printf(年份：);scanf(%d,&year); printf(月份：);scanf(%d,&month); k2=1;while(k2)if(month12|month1)printf(你输入的月份有误，请重新输入!n);printf(月份:);scanf(%d,&month);if(month12)k2=1;else k2=0; /printf(%d年%d月有%d天n,year,month,days_month(year,month); 调试观察输入的日期是否有误，可忽略 printf(日期：);scanf(%d,&day);k3=1;while(k3)if(daydays_month(year,month)|daydays_month(year,month)|day1)k3=1;else k3=0; search_someday(year,month,day);printf(-*-nnn);break;case 4:exit(0);printf(-*-nnn);break;default:k4=1;while(k4)printf(你输入的数据有误，请重新输入你要进行的操作(1-4):);scanf(%d,&i);if(i4)k4=1;else k4=0; break;while(i0&i5);return 0;void menu()int i=1; printf(nntt-n);printf(tt|-|n);printf(tt| %d. 输出某年的日历 |n,i);printf(tt| %d. 输出某月的日历 |n,i+1);printf(tt| %d. 查询某日是星期几 |n,i+2);printf(tt| %d. 退出系统 |n,i+3); printf(tt|-|n);printf(tt-nn);int leap(int year)if(year%4=0&year%100!=0)|year%400=0) return 1;else return 0; int days_month(int year,int month)int days_month;switch(month)case 1:case 3:case 5:case 7:case 8:case 10:case 12: days_month = 31;break;case 4:case 6:case 9:case 11:days_month = 30;break;case 2:if(leap(year)=1) days_month = 29;break;else days_month = 28;break;return days_month;int someday(int year,int month,int day)/该函数运用了特殊的计算公式，详细可参见 /hexin_mars_blog/blog/static/248215040201571351115699/int someday,m,n,i; /someday表示查询的日子是星期几m=year-year/1000*1000;n=m-m/100*100-1;/用于获得年份的后两位数 int days=0;for(i=1;imonth;i+) days = days + days_month(year,i);days =days + day;someday = (n + n/4 - n/100 + n/400 + days)%7;return someday;void search_someday(int year,int month,int day)char weekname20;switch(someday(year,month,day)case 0:strcpy(weekname,星期天) ;break;case 1:strcpy(weekname,星期一) ;break;case 2:strcpy(weekname,星期二) ;break;case 3:strcpy(weekname,星期三) ;break;case 4:strcpy(weekname,星期四) ;break;case 5:strcpy(weekname,星期五) ;break;case 6:strcpy(weekname,星期六) ;break;printf(你所要查询的日期是%sn,weekname);void search_month(int year,int month)int i=0,j,k=0,m; /j用于记录某月的第一天是星期几 m用于记录某月的天数 k用于换行提示 char x10= ;m=days_month(year,month); j=someday(year,month,1);/输出某月的日历printf(-n);printf(%sn,str);for(;