c语言编程题目答:struct date{ int year;int month;int day;}date;char monthday[]={31,28,31,30,31,30,31,31,30,31,30,31};int Count(){ int i=0;int d;int yy;d=0;yy=date.year;for(i=1;i<date.month;i++)d+=monthday[i-1];d+=date.day;if(((yy%4==0&&yy%100!=0)||yy%400=...