add new converter: sec to hour

src/convert_time.c

@@ -24,3 +24,8 @@ double converter_hour_in_sec(double hour){
     double time = hour * 60 * 60;
     return time;
 }
+
+double converter_sec_in_hour(double sec){
+    double time = sec / 60 / 60;
+    return time;
+}

src/convert_time.h

@@ -6,5 +6,6 @@ double converter_min_to_sec(double min);
 double converter_hour_to_min(double hour);
 double converter_min_to_hour(double min);
 double converter_hour_in_sec(double hour);
+double converter_sec_in_hour(double sec);
 
 #endif //THEADMIRALS_CONVERT_TIME_H