TopCoder SRM 144 div2

熟悉TC的第一道题。。

#include <iostream>#include <cstring>#include <cstdio>#include <cstdlib>using namespace std;class Time{public:string whatTime(int s);};string Time::whatTime(int s){int hh, mm, ss;char buf[20];hh = s / 3600;s %= 3600;mm = s / 60;s %= 60;ss = s;sprintf(buf, "%d:%d:%d\n", hh, mm, ss);string ans = buf;return ans;}/*int main(){Time time;int s;cin >> s;cout << time.whatTime(s) << endl;return 0;}*/