#include <iostream>//计算两个日期相对于0000 00 00的差值 using namespace std; int m[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; struct date { int year; int month; int day; }; void cal(date& d, string s) { d.day = 0; d.month = 0; d.year = 0; for (int i = 0; i < s.size(); i++) { if (i <...