用C语言怎么编写这个万年历答:printf("%4d年%2d月共有%d天\n按任意键继续。。。\n",year,month,getMaxDay(year,month)),getch();break;case 3:while(year<=0 || year>9999 || month<=0 || month>12 || day<0 || day>getMaxDay(year,month))printf("请输入日期:"),scanf("%d%d%d",&year,&month,&day);pri...