csharp-cheatsheet.md

Table of Contents

• C# for Developers
• Data Types
• Variables
• Operators
• Loops

C# for Developers

C Sharp is a general-purpose, multi-paradigm programming language encompassing strong typing, imperative, declarative, functional, generic, object-oriented (class-based), and component-oriented programming disciplines. It was developed around 2000 by Microsoft within its .NET initiative and later approved as a standard by Ecma (ECMA-334) and ISO (ISO/IEC 23270:2018). C# is one of the programming languages designed for the Common Language Infrastructure. 🔼Back to Top

Data Types

Data Type	Description	Size
bool	Boolean data type	1 bit
byte	Unsigned integer	1 byte
char	Character	2 bytes
decimal	Decimal data type	16 bytes
double	Double-precision floating point	8 bytes
float	Single-precision floating point	4 bytes
int	Integer	4 bytes
long	Long integer	8 bytes
sbyte	Signed integer	1 byte
short	Short integer	2 bytes
uint	Unsigned integer	4 bytes
ulong	Unsigned long integer	8 bytes
ushort	Unsigned short integer	2 bytes

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Variables

Variables are containers for storing data values.

int myNum = 5;               // Integer (whole number)

double myFloatNum = 5.99D;   // Floating point number

char myLetter = 'D';         // Character

string myText = "Hello";     // String

bool myBool = true;          // Boolean

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Operators

Operator	Description	Example
+	Addition	x + y
-	Subtraction	x - y
*	Multiplication	x * y
/	Division	x / y
%	Modulus	x % y
++	Increment	++x
--	Decrement	--x

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Loops

For Loop

for (statement 1; statement 2; statement 3) {
  // code block to be executed
}

While Loop

while (condition) {
  // code block to be executed
}

Do While Loop

do {
  // code block to be executed
}
while (condition);

For Each Loop

foreach (type variableName in arrayName) {
  // code block to be executed
}

Break

for (int i = 0; i < 10; i++) {
  if (i == 4) {
    break;
  }
  Console.WriteLine(i);
}

Continue

for (int i = 0; i < 10; i++) {
  if (i == 4) {
    continue;
  }
  Console.WriteLine(i);
}

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