using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace TimeCalculator
{
	public class Program
	{
	  public static int one;
	  
		public static void Main()
		{
			Console.WriteLine("Time Calculator v.0.1");
			Console.WriteLine("Welcome");
			Console.WriteLine("Note that all inputs should be in 24-hour time");
			Console.WriteLine(" ");
			Console.WriteLine("Convert to minutes, Find difference between two times, Find time in X minutes. (1, 2, 3)");
			one = Convert.ToInt32(Console.ReadLine());
			  if(one == 1) {
			    Console.WriteLine("Sending to convert...");
			    Console.WriteLine(" ");
			    ConvertToMinutes();
			  }else if(one == 2) {
			    Console.WriteLine("Sending to find difference...");
			    Console.WriteLine(" ");
			    FindDifference();
			  }else if(one == 3) {
			    Console.WriteLine("Sending to find time in X minutes...");
			    Console.WriteLine(" ");
			    AddMinutes();
			  }
			  
			  Console.WriteLine(" ");
			  Main();
		}
		
		
		
		
		public static void ConvertToMinutes() {
		  Console.WriteLine("Enter Hours:");
		  int hours = Convert.ToInt32(Console.ReadLine());
		  Console.WriteLine("Enter Minutes:");
		  int minutes = Convert.ToInt32(Console.ReadLine());
		  Console.WriteLine("Time To Convert: " + hours + ":" + minutes);
		  
		  //Convert hours to minutes
		  while(hours > 0) {
		    minutes += 60;
		    hours--;
		  }
		  Console.WriteLine("New Time: " + minutes);
		}
		
		
		
		
		public static void FindDifference() {
		  Console.WriteLine("Enter Hours:");
		  int hours = Convert.ToInt32(Console.ReadLine());
		  Console.WriteLine("Enter Minutes:");
		  int minutes = Convert.ToInt32(Console.ReadLine());
		  Console.WriteLine("Starting Time: " + hours + ":" + minutes);
		  Console.WriteLine(" ");
		  Console.WriteLine("Enter Hours Two:");
		  int hoursTwo = Convert.ToInt32(Console.ReadLine());
		  Console.WriteLine("Enter Minutes Two:");
		  int minutesTwo = Convert.ToInt32(Console.ReadLine());
		  Console.WriteLine("Time Two: " + hoursTwo + ":" + minutesTwo);
		  
		  //Convert To minutes
		  while (hours > 0) {
		    minutes += 60;
		    hours--;
		  }
		  while (hoursTwo > 0) {
		    minutesTwo += 60;
		    hoursTwo--;
		  }
		  
		  minutesTwo -= minutes;
		  
		  Console.WriteLine("Minute Difference: " + minutesTwo);
		  
		  //Convert vack to normal
		  if(minutesTwo > 60) {
		    while(minutesTwo > 60) {
		      hoursTwo++;
		      minutesTwo -= 60;
		    }
		    
		    if(minutesTwo < 10) {
		      Console.WriteLine("Total Difference: " + hoursTwo + ":" + "0" + minutesTwo);
		    }else {
		      Console.WriteLine("Total Difference: " + hoursTwo + ":" + minutesTwo);
		    }
		  }
		}
		
		
		public static void AddMinutes() {
		  Console.WriteLine("Enter Hours:");
		  int hours = Convert.ToInt32(Console.ReadLine());
		  Console.WriteLine("Enter Minutes:");
		  int minutes = Convert.ToInt32(Console.ReadLine());
		  Console.WriteLine("Starting Time: " + hours + ":" + minutes);
		  Console.WriteLine(" ");
		  Console.WriteLine("Enter Hours Two:");
		  int hoursTwo = Convert.ToInt32(Console.ReadLine());
		  Console.WriteLine("Enter Minutes Two:");
		  int minutesTwo = Convert.ToInt32(Console.ReadLine());
		  Console.WriteLine("Time Two: " + hoursTwo + ":" + minutesTwo);
		  
		  while(hours > 0) {
		    minutes += 60;
		    hours--;
		  }
		  while(hoursTwo > 0) {
		    minutesTwo += 60;
		    hoursTwo--;
		  }
		  
		  minutes += minutesTwo;
		  
		  Console.WriteLine("Minute Difference: " + minutes);
		  while(minutes > 60) {
		    hours++;
		    minutes -= 60;
		  }
		  if(hours > 0) {
		    if(minutes > 9) {
		      Console.WriteLine("Time Difference: " + hours + ":" + minutes);
		    }else {
		      Console.WriteLine("Time Difference: " + hours + ":0" + minutes);
		    }
		  }
		}
	}
}

//Check if minutes inputed is over 60 and if it is, change to hours
/*

*/ 
by

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Read inputs from stdin

OneCompiler's C# online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.

using System;
 
namespace Sample
{
  class Test
    {
      public static void Main(string[] args)
       {
         string name;
         name = Console.ReadLine();
         Console.WriteLine("Hello {0} ", name);
	}
     }
}

About C Sharp

C# is a general purpose object-oriented programming language by Microsoft. Though initially it was developed as part of .net but later it was approved by ECMA and ISO standards.

You can use C# to create variety of applications, like web, windows, mobile, console applications and much more using Visual studio.

Syntax help

Data types

Data TypeDescriptionRangesize
intTo store integers-2,147,483,648 to 2,147,483,6474 bytes
doubleto store large floating point numbers with decimalscan store 15 decimal digits8 bytes
floatto store floating point numbers with decimalscan store upto 7 decimal digits4 bytes
charto store single characters-2 bytes
stringto stores text-2 bytes per character
boolto stores either true or false-1 bit

Variables

Syntax

datatype variable-name = value;

Loops

1. If-Else:

When ever you want to perform a set of operations based on a condition or set of few conditions IF-ELSE is used.

if(conditional-expression) {
   // code
} 
else {
   // code
}

You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.

2. Switch:

Switch is an alternative to If-Else-If ladder.

switch(conditional-expression) {    
case value1:    
 // code    
 break;  // optional  
case value2:    
 // code    
 break;  // optional  
...    
    
default:     
 // code to be executed when all the above cases are not matched;    
} 

3. For:

For loop is used to iterate a set of statements based on a condition.

for(Initialization; Condition; Increment/decrement) {
  // code  
} 

4. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

while(condition) {
 // code 
}

5. Do-While:

Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.

do {
  // code 
} while (condition);

Arrays

Array is a collection of similar data which is stored in continuous memory addresses. Array values can be fetched using index. Index starts from 0 to size-1.

Syntax

data-type[] array-name;

Methods

Method is a set of statements which gets executed only when they are called. Call the method name in the main function to execute the method.

Syntax

static void method-name() 
{
  // code to be executed
}