c++ UVA 579 - ClockHands wrong answer -

i trying solve question system keep giving me "wrong answer". checked other people's solution , i'm sure algorithm correct. can me it? lot. question: uva 579 clockhands

#include <iostream> #include <cstdio> #include <cmath> using namespace std;  int main() {     int hour, minute;     float hour_degree, minute_degree;     float total;     while(scanf("%d:%d",&hour, &minute) == 2)     {         if( hour == 0 && minute == 0)             break;         minute_degree = minute * 6;         hour_degree = hour * 30 + float(minute / 2);         total = fabs(hour_degree - minute_degree);         if(total > 180)             total = fabs(360 - total);         printf("%.3f\n", total);      }     return 0; } 

i spotted bug here

hour_degree = hour * 30 + float(minute / 2); 

you doing integer division, , goes wrong if minute odd number. should be

hour_degree = hour * 30 + float(minute / 2.0);