C语言编程答:voidprintmenu();voidxingqi();voidrili();voidrunnian();intrunniansub(int);intweek(int,int,int);intmonthday[12]={31,28,31,30,31,30,31,31,30,31,30,31};intmain(){ charmenu;do{ printmenu();menu=getch();printf("%c\n",menu);switch(menu){ case'1':xingqi();break;c...