static void Main(string[] args)
{
bool decision = true;
while (decision)
{
StopWatch.Implementation();
Console.WriteLine("would you like to rerun? Type \'Y\' or \'N\'");
string ans = Console.ReadLine();
if (ans.ToLower() == "y")
{
StopWatch.Implementation();
}
else
{
decision = false;
}
}
}
public static void Implementation()
{
Console.WriteLine("Enter Start/Stop for stopwatch");
string input1 = Console.ReadLine();
if (input1.ToLower() == "start")
{
StopWatch.Start();
}
//else if (input.ToLower() == "stop")
//{
// StopWatch.Stop();
//}
Console.WriteLine("Enter stop to stop");
string input2 = Console.ReadLine();
if (input2.ToLower() == "stop")
{
StopWatch.Stop();
}
}
static void Main(string[] args)
{
//Exercise 1: Design a StopwatchDesign a class called Stopwatch.
//The job of this class is to simulate a stopwatch.It should provide two methods: Start and Stop.
//We call the start method first, and the stop method next.
//Then we ask the stopwatch about the duration between start and stop. Duration should be a value in TimeSpan.
//Display the duration on the console. We should also be able to use a stopwatch multiple times.
//So we may start and stop it and then start and stop it again.
//Make sure the duration value each time is calculated properly.
//We should not be able to start a stopwatch twice in a row (because that may overwrite the initial start time).
//So the class should throw an InvalidOperationException if its started twice.
//Educational tip: The aim of this exercise is to make you understand that a class should be always in a valid state.
//We use encapsulation and information hiding to achieve that.The class should not reveal its implementation detail.
//It only reveals a little bit, like a blackbox.From the outside, you should not be able to misuse a class
//because you shouldn’t be able to see the implementation detail.
var stopwatch = new StopWatch();
Console.WriteLine("To begin the stop watch, type 'start' and hit enter. To end the stopwatch, type 'stop' and hit enter. Type 'q' to quit.");
var input = Console.ReadLine().ToLower();
var alreadyStarted = false;
var start = TimeSpan.Zero;
TimeSpan stop;
var quit = false;
var total = TimeSpan.Zero;
while (quit == false)
{
if (input == "start" && alreadyStarted == false)
{
start = stopwatch.Now(alreadyStarted);
alreadyStarted = true;
input = Console.ReadLine();
}
else if (input == "stop" && alreadyStarted == true)
{
stop = stopwatch.Now(alreadyStarted);
alreadyStarted = false;
var diff = stopwatch.Diff(start, stop);
total += stopwatch.Total(diff, total);
Console.WriteLine($"Total time: {total}");
input = Console.ReadLine();
}
else if (input == "start" && alreadyStarted == true)
{
Console.WriteLine("You've already started the stopwatch. Try typing 'stop'.");
input = Console.ReadLine();
}
else if (input == "stop" && alreadyStarted == false)
{
Console.WriteLine("You need to start the stopwatch before stopping it. Try typing 'start'.");
input = Console.ReadLine();
}
else if (input == "q")
{
quit = true;
}
else
{
Console.WriteLine("Invalid input. Please try again.");
input = Console.ReadLine();
}
}
}
