ASP. Basic knowledge

1."Project Structure"

1.1 file suffix:

. CS Source file (program code)

. csproj project files (manage file entries)

. sln solution files (Manage projects)

. config configuration file

1.2 main function:

the underlined part can be named by yourself

Static void Main (string[] args)

{

Main function contents

}

1.3 Input statement:

reads a row of data and assigns a value to s

String S=console.readline ();

1.4 Output Statement:

Console Writeline ("to output content");

Console Write ("to output content");

The difference betweenWriteline and Write :Writeline the output after the line wrap.

2"Data type"

2.1 Value Types

--- integer: Signed integer and unsigned integer. (The difference between ——— unsigned integers is larger than the positive number of the model integer.) Formula is 2x+1 )

Signed integer:sbyte,short,int,Long ( from small to large )

Unsigned integral type:byte,ushort,uint,ulong

--- floating-point type:float,double,decimal ( from small to large )

--- character type:char

---boolean (bool):true,false ( for Judgment )

---string type: string ( equivalent to the concept of character type, long length, the definition of double quotation marks.) )

Date and Time type---:datetime

--- enum type:enum E (、、、、、、)

--- structure type:struct S (、、、、、、)

2.2 Reference Types

--- strings: string

--- class type: the final base class for all other types of Object

user-defined types in the form of Class C (、、、、、、)

--- interface type:Interface I (、、、、、、)

--- array type: one-dimensional and multidimensional arrays. such as int [] and int[,]

3"vs software common shortcut keys"

Shift + DELETE deletes a row

Alt + → tips, changing

Ctrl + (k,c) Comment Select line

Ctrl + (K,u) Uncomment the selected line

4"The difference between a constant and a variable"

Add a const before the variable type . (Constants cannot be assigned second time)

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ASP. Basic knowledge