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#include <iostream>
using namespace std; bool IsRound( int year){ if ((year%100)&&(year%4==0)) return 1; if ((year%100==0)&&(year%400==0)) return 1; return 0; } int main() { int n; int year_s[2]= {365*24*60*60, 366*24*60*60}; int month_s[2][12]={ {31,28,31,30,31,30,31,31,30,31,30,31}, {31,29,31,30,31,30,31,31,30,31,30,31}}; int day_s = 24*60*60; int hour_s = 60*60; int minute_s = 60; while (cin>>n){ int temp = n; int year=1970; int month=1; int day=1; int hour=0; int minute=0; int second=0; while (temp>=60){ int flag= IsRound(year); if (temp>=year_s[flag]) { year++; temp-=year_s[flag]; } else if (temp>=day_s){ int days = temp/day_s; temp=temp%day_s; int i=0; int flag = IsRound(year); int hh=31; while (days>=hh){ days-=month_s[flag][i++]; hh=month_s[flag][i]; } month+= i; day+=days; } else if (temp>=hour_s){ hour=temp/hour_s; temp%=hour_s; } else if (temp>=minute_s){ minute = temp/minute_s; temp%=minute_s; } } second = temp; cout<<year<< "-" ; if (month/10==0) cout<< "0" ; cout<<month<< "-" ; if (day/10==0) cout<< "0" ; cout<<day<< " " ; if (hour/10==0) cout<< "0" ; cout<<hour<< ":" ; if (minute/10==0) cout<< "0" ; cout<<minute<< ":" ; if (second/10==0) cout<< "0" ; cout<<second<<endl; } return 0; } 转载地址：http://golzl.baihongyu.com/