Scope: The scope of this article is up to title and to describe it in practically behavior.
Before, we go further to know about the C# data type, let understand the two important types i.e. Value type and reference type.
The Value type stores value directly rather than reference type stores a reference to that value. In memory, Value type stores in stack and reference type stores in heap.
Now, let us take a look on data types
C#:Data Types
The following table shows the detailed overview of C#:Data Types
Name |
Relevant
CTS Type |
Description |
Range |
Type |
Example |
Min. |
Max |
Value |
Ref. |
sbyte |
System.Sbyte |
Signed Integer [8-bits] |
-128 |
127 |
Yes |
No |
sbyte i; |
short |
System.Int16 |
Signed Integer [16-bits] |
32,768 |
32,767 |
Yes |
No |
short i; |
int |
System.Int32 |
Signed Integer [32-bits] |
-2,147,483,648 |
2,147,483,647 |
Yes |
No |
int i; |
long |
System.Int64 |
Signed Integer [64-bits] |
-9223372036854775808 |
9223372036854775807 |
Yes |
No |
long i = 1234L; |
byte |
System.Byte |
Unsigned Integer [8-bits] |
0 |
255 |
Yes |
No |
byte i; |
ushort |
System.UInt16 |
Unsigned Integer [16-bits] |
0 |
65,535 |
Yes |
No |
ushort i; |
uint |
System.UInt32 |
Unsigned Integer [32-bits] |
0 |
4,294,967,295 |
Yes |
No |
uint i = 1234U; |
ulong |
System.UInt64 |
Unsigned Integer [64-bits] |
0 |
18446744073709551615 |
Yes |
No |
ulong i = 1234UL; |
float |
System.Single |
Single precision floating point [32-bits] |
+1.5 x 10-45 |
+3.4 x 1038 |
Yes |
No |
float i; |
double |
System.Double |
Double precision floating point [64-bits] |
+5.0 x 10-324 |
+1.7 x 10308 |
Yes |
No |
double i; |
decimal |
System.Decimal |
High precesion decimal notation [128-bits] |
+1.0 x 10-28 |
+7.9 x 1028 |
Yes |
No |
decimal i=12.45m; |
bool |
System.Boolean |
dedicated to boolean type [true ot false] |
|
|
Yes |
No |
bool i; |
char |
System.Char |
Single [64-bit unicode character] |
|
|
Yes |
No |
char i; |
object |
System.Object |
The main type or mother type, all other CTS types derived from it |
|
|
No |
Yes |
object i; |
string |
System.String |
Represents Unicode Characters |
|
|
No |
Yes |
string s; |
The following examples send the output of data types:
/* This Example is a part of different
* examples shown in Book:
* C#2005 Beginners: A Step Ahead
* Written by: Gaurav Arora
* Reach at : gaurav.aroraose@yahoo.co.in*/
// File name : datatypesCS.cs
using System;
namespace CSharp.AStepAhead.datatypesCS
{
public class datatypesCS
{
static void Main()
{
Console.WriteLine("Data Types and their range(s) in C# : ");
Console.WriteLine("sbyte: {0} to {1}", sbyte.MinValue, sbyte.MaxValue);
Console.WriteLine("byte: {0} to {1}", byte.MinValue, byte.MaxValue);
Console.WriteLine("short: {0} to {1}", short.MinValue, short.MaxValue);
Console.WriteLine("ushort: {0} to {1}", ushort.MinValue, ushort.MaxValue);
Console.WriteLine("int: {0} to {1}", int.MinValue, int.MaxValue);
Console.WriteLine("uint: {0} to {1}", uint.MinValue, uint.MaxValue);
Console.WriteLine("long: {0} to {1}", long.MinValue, long.MaxValue);
Console.WriteLine("ulong: {0} to {1}", ulong.MinValue, ulong.MaxValue);
Console.WriteLine("float: {0} to {1}", float.MinValue, float.MaxValue);
Console.WriteLine("double: {0} to {1}", double.MinValue, double.MaxValue);
Console.WriteLine("decimal: {0} to {1}", float.MinValue, float.MaxValue);
//Recognize to user the output
Console.WriteLine("Hit enter to terminate!");
Console.Read();
return;
}
}
}
Escape sequence
C# has escape sequences for better formatting results like other languages:
C#:Escape Sequences
Like other languages C# also have esape sequences, following table describes all:
Escape Sequence |
Meaning |
\' |
Single quote |
\" |
Double quote |
\\ |
Backslash |
\0 |
Null |
\a |
Alert |
\b |
Backspace |
\f |
FormFeed |
\n |
Newline |
\r |
Carriage return |
\t |
Tab character |
\v |
Vertical tab |
The following program tells about all escape sequences
/* This Example is a part of different
* examples shown in Book:
* C#2005 Beginners: A Step Ahead
* Written by: Gaurav Arora
* Reach at : gaurav.aroraose@yahoo.co.in*/
// File name : escapesequence.cs
using System;
namespace CSharp.AStepAhead.escapesequence
{
class escapesequence
{
static void Main()
{
string str = "This is : ";
Console.WriteLine("{0} \'Single quote",str);
Console.WriteLine("{0} \" Double quote", str);
Console.WriteLine("{0} \\ Backslash", str);
Console.WriteLine("{0} \0 Null", str);
Console.WriteLine("{0} \a Alert", str);
Console.WriteLine("{0} \b Backspace", str);
Console.WriteLine("{0} \f Form feed", str);
Console.WriteLine("{0} \n Newline", str);
Console.WriteLine("{0} \r Carriage return", str);
Console.WriteLine("{0} \t Tab", str);
Console.WriteLine("{0} \v Vertical Tab", str);
return;
}
}
}
For more details, visit http://www.msdotnetheaven.com/ChaptersCsharp/csharplanguagei.htm
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