4.26 Basic Language Learning

The learning of the basic part of language

Four elements of a function:

1. Name
2. Input statement
3. Output statement
4. Processing

Static void Main (string[]arges)//

Main function contents

Console.readkey ();//Input statement

Console.. ReadLine; Input statement

Console.WriteLine; Output Statement Wrap Line

Console.Write; Output statement, not wrap line

Namespace console.application Namespace

Class Praogram Classes

Static void Main (String[]args) method

The same number in a row is separated by commas with multiple variables

int A, B, (l name variable type, separated by commas)

integer int Int3

Float Type: float

Boolean-type bool

String Type: String

Class Type:

The final base class for all types of Object

Interface interface Type

Data type. variable name [= value]

Keyword before the variable name. Only assignments cannot be evaluated

Const int A=1

Basic Type Conversions

1. Automatic conversions from value types to reference types

2. Casts a reference class to a value class, or a floating-point conversion to an integral type, when a reference type is converted to a value type, you must reference the type element in the data, and you must convert the capacity data in the value type

1. With ()

Example: int a;double b=12.3;a= (int) b;

1. with convert;

Int a float C double b=12.3

A=convert. Toint32 (b);

C=convert.toisingle. (b);

With the parse;

Int A; Double b=12.3

A=int.parse (b);

4.26 Basic Language Learning