private TimeStruct NormalizeTime(TimeStruct input)
{
// divide by 60 e.g. 75(s) / 60 = 1(int)
int next = input.Second / 60;
// get divide remaining and set as current second
input.Second = input.Second % 60;
// add calculated minutes to the time minute
input.Minute += next;
// divide by 60 e.g. 75(m) / 60 = 1(int)
next = input.Minute / 60;
// get divide remaining and set as current minute
input.Minute = input.Minute % 60;
while (input.Hour < 0 || input.Minute < 0 || input.Second < 0)
{
// add extra hours to current hour
input.Hour += next;
// normalize hour
input.Hour = input.Hour % 24;
// if second is negative
if (input.Second < 0)
{
// decrease minute
input.Minute--;
// add 60 seconds to second
input.Second += 60;
}
// if minute is negative
if (input.Minute < 0)
{
// decrease hour
input.Hour--;
// add 60 minutes to input
input.Minute += 60;
}
// if hour is negative
if (input.Hour < 0)
{
// add 24 hours to hour
input.Hour += 24;
}
}
// return normalized value to the caller
return(input);
}
public void SetTime(TimeStruct time)
{
// normalize input time
var t = NormalizeTime(time);
// assign hour
_Hour = t.Hour;
// assign minute
_Minute = t.Minute;
// assign second
_Second = t.Second;
}
public TimeStruct Subtract(TimeStruct t1, TimeStruct t2)
{
// create output variable
TimeStruct output;
// subtract hours
output.Hour = t2.Hour - t1.Hour;
// subtract minutes
output.Minute = t2.Minute - t1.Minute;
// subtract seconds
output.Second = t2.Second - t1.Second;
while (output.Hour < 0 || output.Minute < 0 || output.Second < 0)
{
// if hour is negative
if (output.Hour < 0)
{
// fix negative hour
output.Hour += 24;
}
if (output.Minute < 0)
{
// decrease hour
output.Hour--;
// add 60 minutes to current minute
output.Minute += 60;
}
if (output.Second < 0)
{
// decrease minute
output.Minute--;
// add 60 seconds to current second
output.Second += 60;
}
}
// normalize time again
output = NormalizeTime(output);
// return output to caller
return(output);
}
public TimeStruct Add(TimeStruct t1, TimeStruct t2)
{
// create output variable
TimeStruct output;
// add hours
output.Hour = t1.Hour + t2.Hour;
// add minutes
output.Minute = t1.Minute + t2.Minute;
// add seconds
output.Second = t1.Second + t2.Second;
// normalize add result
output = NormalizeTime(output);
// return normalized time to the caller
return(output);
}
static void Main(string[] args)
{
// create new instance of time class
Time timeEmpty = new Time();
// create new instance of time class with integer params
Time timeWithIntParams = new Time(22, 65, 59);
// create time
TimeStruct t;
// set hour
t.Hour = 22;
// set minute
t.Minute = 65;
// set second
t.Second = 80;
// create new instance of time class with time param
Time timeWithTimeParam = new Time(t);
// show prompt
Console.WriteLine("Time is");
Console.WriteLine();
// show current time of the timeEmpty instance
Console.WriteLine("time class with default time constructor: {0}", timeEmpty);
// show time with int params
Console.WriteLine("time class with int parameters: {0}", timeWithIntParams);
// increment time (postfix)
Console.WriteLine("Time after increment is (postfix): {0}", timeWithIntParams++);
Console.WriteLine("Time after increment is: {0}", timeWithIntParams);
Console.WriteLine("Time after decrement is (postfix): {0}", timeWithIntParams--);
Console.WriteLine("Time after decrement is: {0}", timeWithIntParams);
timeWithIntParams += 5;
Console.WriteLine("Time after adding 5 seconds is: {0}", timeWithIntParams);
timeWithIntParams -= 5;
Console.WriteLine("Time after subtracting 5 seconds is: {0}", timeWithIntParams);
Console.WriteLine("time class with time parameters: {0}", timeWithTimeParam);
timeEmpty.SetTime(18, 35, 66);
Console.WriteLine("Time has been updated from code: {0}", timeEmpty);
// Get time from user input and update time
Console.WriteLine("Trying to get time from user");
// get user time from console
TimeStruct userTime = timeEmpty.GetTime();
// show user entered values
Console.WriteLine("User entered: {0}:{1}:{2}", userTime.Hour.ToString("00"), userTime.Minute.ToString("00"), userTime.Second.ToString("00"));
// update time
timeEmpty.SetTime(userTime);
Console.WriteLine("Time has been updated by the user. New time is: {0}", timeEmpty);
// Add two times
Console.WriteLine("Add two times");
Console.WriteLine("Enter time 1");
TimeStruct t1 = timeEmpty.GetTime();
Console.WriteLine("Enter time 2");
TimeStruct t2 = timeEmpty.GetTime();
TimeStruct tResult = timeEmpty.Add(t1, t2);
Console.WriteLine("Add result: {0}:{1}:{2}", tResult.Hour.ToString("00"), tResult.Minute.ToString("00"), tResult.Second.ToString("00"));
Time time1 = new Time(t1);
Time time2 = new Time(t2);
Console.WriteLine("Add result (By operator): {0}", time1 + time2);
// subtract two times
Console.WriteLine("Subtract two times");
Console.WriteLine("Enter time 1: ");
t1 = timeEmpty.GetTime();
Console.WriteLine("Enter time 2: ");
t2 = timeEmpty.GetTime();
// subtract two times
tResult = timeEmpty.Subtract(t1, t2);
time1 = new Time(tResult);
// show subtract result
Console.WriteLine("Subtract result: {0}", time1.ToString());
time1 = new Time(t1);
time2 = new Time(t2);
Time operatorResult = time2 - time1;
TimeStruct operatorTime = operatorResult.CurrentTime();
// show subtract result
Console.WriteLine("Subtract result (By operator): {0}:{1}:{2}", operatorTime.Hour.ToString("00"), operatorTime.Minute.ToString("00"), operatorTime.Second.ToString("00"));
// compare two times
Console.WriteLine("Compare two times");
Console.WriteLine("Enter time 1: ");
t1 = timeEmpty.GetTime();
time1 = new Time(t1);
Console.WriteLine("Enter time 2: ");
t2 = timeEmpty.GetTime();
time2 = new Time(t2);
// equality check
bool isEqual = time1 == time2;
// inequality check
bool inEqual = time1 != time2;
// is left side greater than right side
bool isLeftGtRight = time1 > time2;
// is left side greater than or equal right side
bool isLeftGtEqualRight = time1 >= time2;
// is left side less than right side
bool isLeftLtRight = time1 < time2;
// is left side less than or equal right side
bool isLeftLtEqualRight = time1 <= time2;
Console.WriteLine("T1 == T2 = {0}", isEqual);
Console.WriteLine("T1 != T2 = {0}", inEqual);
Console.WriteLine("T1 > T2 = {0}", isLeftGtRight);
Console.WriteLine("T1 >= T2 = {0}", isLeftGtEqualRight);
Console.WriteLine("T1 < T2 = {0}", isLeftLtRight);
Console.WriteLine("T1 <= T2 = {0}", isLeftLtEqualRight);
Console.WriteLine("Press any key to exit...");
Console.ReadKey();
}
public Time(TimeStruct time)
{
// set time on construction
SetTime(time);
}
