#include #include #include #include //Some defines to make things easier #define ms milliseconds #define clock system_clock #define creation time_since_epoch // Defines to declare time-zones #define IST 530 #define GMT 000 #define SST 800 #define CEST 200 #define EDT -400 #define MSK 300 // Using namespaces to reduce scoping in calls using namespace std; using namespace chrono; // Function to format and display time. template void print_time(tm t, Duration frac, int zone) { int mz = zone % 100; int hz = zone / 100; if(t.tm_hour + hz < 0) { t.tm_mday --; t.tm_hour += (24+hz); } else if(t.tm_hour + hz >=24) { t.tm_mday ++; t.tm_hour = ((t.tm_hour+hz)-24); } else if(t.tm_min + mz >=60) { t.tm_hour += hz + 1; t.tm_min = ((t.tm_min+mz)-60); } else { t.tm_hour += hz; t.tm_min += mz; } string h,m,s; t.tm_hour < 10 ? (h="0"):(h=""); t.tm_min < 10 ? (m="0"):(m=""); t.tm_sec < 10 ? (s="0"):(s=""); cout<(frac).count(); } int main() { clock::time_point now = clock::now(); clock::duration tp = now.creation(); tp -= duration_cast(tp); time_t tt = clock::to_time_t(now); cout<<"IST (India) - "; print_time(*gmtime(&tt), tp, IST); cout<<"\n\n"; cout<<"GMT (London) - "; print_time(*gmtime(&tt), tp, GMT); cout<<"\n\n"; cout<<"SST (Singapore) - "; print_time(*gmtime(&tt), tp, SST); cout<<"\n\n"; cout<<"EDT (New York) - "; print_time(*gmtime(&tt), tp, EDT); cout<<"\n\n"; cout<<"CEST (Paris) - "; print_time(*gmtime(&tt), tp, CEST); cout<<"\n\n"; cout<<"MSK (Moscow) - "; print_time(*gmtime(&tt), tp, MSK); cout<<"\n\n"; }

System Time