向下遍历一天的函数 void nextday(int &year,int &month,int &day){ int dayom[]={0,31,28,31,30,31,30,31,31,30,31,30,31}; int isleap; isleap=year%400==0||year%4==0&&year%100!=0; if(isleap){ dayom[2]=29; }else{ dayom[2]=28; } ++day; if(day>dayom[month]){ day=1; month++; } ...