C # language Summary 1

c#c# definition:　

C # is an object-oriented, component-oriented language that is part of. Net.

Program Structure:

Name space

Class

Property

Method

Main function entry

}

Data type:

C # Data types are divided into: value type (value types), reference type (Reference types), pointer type (Pointer types)

value types : Store them and content on the stack

Boolean value: BOOL,

Characters: Char,

Decimal: Float, double, decimal

Signed integers: sbyte, short, int, long

Unsigned number: Byte, uint, ULONG

Infrequently used: Ensum (enum), struct (struct)

The detailed scope of each data type is as follows:

reference Types : Store objects in the heap, store references in different places, mainly related to objects, etc.

class -related objects, such as object,string (string is an alias of string), and class

Interface: interface

Arrays: such as: int[]

Commissioned by: Delegate

pointer type :

Pointers in C # have the same functionality as pointers in C or C + +. such as: int* P;

Common knowledge:

Escape characters :

Mathematical operators :

Subtraction: + 、-、 *,/(Division sign will calculate the result with the most accurate parameters, if all integers, the fractional part will be shed, such as: 3/2.0 = 1.5,3/2 = 1)

exponentiation: ^

Self-increment/decrement: + + 、--

Modulus:%

All operators and precedence are as follows:

Basic Statement :

Statement: int/char/string name;

Judgment: If

Loops: While, for, do while, foreach

Select: Switch

Jump Out (less)/interrupt/Loop Skip: Goto, break, continue

Function:

Two key words
Static
Acting on variables: allocating memory at compile time, releasing at end of program
Function: This function is only visible within this file
void: No type, used when the function does not require arguments or return values

Static <returnType><FunctionName><paramType> <paramName>,...)
{
Logic
Return <returnValue>;
}

C # language Summary 1