Industrial essays _C # connection PLC_ of _C # _03_ entry of basic data types

a using System;
 a using System.Collections.Generic;
 a using System.Linq;
 a using System.Text; 


// namespace keyword is used to define a namespace, the namespace is mainly used to solve the problem of naming conflicts
 // namespace there is a role will organize a set of classes related to an abstract space inside, you must reference
 // namespace to access the contents of the namespace 
namespace ConsoleApplication1   
{ 
    class Program 
    { 
        static  void Main ( String [] args) 
        { 
            // C # built a lot of simple data type, also known as the basic data types
             // divided into three categories: integer data, floating point data types and character 

            // integer data types: Short, int, Long
             // Note also, integer data It has signed and unsigned, 

            //8bit byte 
            Console.WriteLine ( " sbyte Type maximum value is: " + sbyte .MaxValue); 
            Console.WriteLine ( " sbyte Type minimum value is: " + sbyte .MinValue); 
            Console.WriteLine ( " byte Type maximum value: " + byte .MaxValue); 
            Console.WriteLine ( " byte type minimum value is: " + byte .MinValue); 

            // Short 16bit 
            Console.WriteLine ( " Short type maximum value is: " + Short .MaxValue);
            Console.WriteLine ( " Short Type minimum value is: " + Short .MinValue); 
            Console.WriteLine ( " ushort Type maximum value is: " + ushort .MaxValue); 
            Console.WriteLine ( " ushort Type minimum value is: " + ushort .MinValue); 

            // int 32bit 
            Console.WriteLine ( " An int is: " + int .MaxValue); 
            Console.WriteLine ( " minimum is of type int: " + int .MinValue); 
            Console.WriteLine ( " uint type maximum was:" + Uint .MaxValue); 
            Console.WriteLine ( " minimum uint type is: " + uint .MinValue); 

            // long 64bit 
            Console.WriteLine ( " maximum value of the long type is: " + long .MaxValue); 
            Console .WriteLine ( " minimum long type is: " + long .MinValue); 
            Console.WriteLine ( " maximum ulong type is: " + ulong .MaxValue); 
            Console.WriteLine ( " minimum ulong type is: "+ head .MinValue); 


            // float There are three types: a float, Double, decimal
             // wherein currency for decimal data type, the data of high precision, is effective decimals plurality 
            
            @ character, there are two types: and String char
             // char is a unicode character type, character sets can represent a wide 

            // not general implicit type conversion in C #, required display data type conversion 
            Console.WriteLine ( " maximum char type is: " + ( Long ) char .MaxValue); 
            Console.WriteLine ( " minimum char type is: " + ( Long ) char .MinValue); 
            Console.WriteLine ( " characters maximum char type represented as:" + ( Char ) char .MaxValue); 
            Console.WriteLine ( " characters minimum char type represented as: " + ( char ) char .MinValue); 

            // String is a unicode string type 
            String strGreeting; 
            Console .WriteLine ( " Please enter the greeting: " ); 
            strGreeting = Console.ReadLine (); 
            Console.WriteLine ( " your input is welcome words: " + strGreeting); 

            // Note that string in C # can be connected two way, with the heavy load off the operator + or join function
             // because no learning content to the template, here temporarily introduced

            // Finally, there is a particular basic data types bool type, which has two values and true to false
            // Note that, C # and C, C # and C ++ is different, can not implicitly nonzero value indicates the amount of bool 
            IF ( true ) 
                Console.WriteLine ( " using a true constant " ); 

            / * 
             * The following compulsory type conversion is not successful, it requires special attention place 
            IF ((BOOL). 1) 
                Console.WriteLine ( "true constant use"); 

           * / 

            Console.Read (); 
        } 
    } 
}

 

 

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