#include <iostream> using namespace std; bool LeapYear(int year) { if((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) { return true; } return false; } int main() { int GetMonth[2][13] = { {0,31,28,31,30,31,30,31,31,30,31,30,31}, {0,31,29,31,30,31,30,31,31,30,31,30,31} }; int yea...