time struct

Author: ivanbrennan

prog.9.5.c

@@ -0,0 +1,49 @@
+// Program to update the time by one second
+
+#include <stdio.h>
+
+struct time
+{
+	int hour;
+	int minutes;
+	int seconds;
+};
+
+int main (void)
+{
+	struct time timeUpdate (struct time now);
+	struct time currentTime, nextTime;
+
+	printf ("Enter the time (hh:mm:ss): ");
+	scanf  ("%i:%i:%i", &currentTime.hour,
+			&currentTime.minutes, &currentTime.seconds);
+
+	nextTime = timeUpdate (currentTime);
+
+	printf ("Updated time is %.2i:%.2i:%.2i\n", nextTime.hour,
+			nextTime.minutes, nextTime.seconds);
+
+	return 0;
+}
+
+// Function to update the time by one second
+
+struct time timeUpdate (struct time now)
+{
+	++now.seconds;
+
+	if ( now.seconds == 60 ) {		// next minute
+		now.seconds = 0;
+		++now.minutes;
+
+		if ( now.minutes == 60 ) {	// next hour
+			now.minutes = 0;
+			++now.hour;
+
+			if ( now.hour == 24 )	// midnight
+				now.hour = 0;
+		}
+	}
+
+	return now;
+}