#include <iostream> using namespace std; int Getmonthday(int year,int month){ int monthday[]={0,31,28,31,30,31,30,31,31,30,31,30,31}; if(month==2 && ((year % 4 ==0 && year % 100!= 0) || year %400 ==0)) return 29; return monthday[month]; } int main() { int m,ye...