c# sizeof_C＃程序演示sizeof（）运算符的示例

c# sizeof

C＃sizeof()运算符 (C# sizeof() operator)

It is used to obtain the size of a data type in bytes (primitive data type).

它用于获取以字节为单位的数据类型的大小(原始数据类型)。

Syntax:

句法：

    sizeof(type);
sizeof(int);	//returns 4

Example:

例：

    Input:
sizeof(byte);
sizeof(short);
sizeof(int);
Output:
1
2
4

C# code to get size of various primitive data types

C＃代码获取各种原始数据类型的大小

In the below program, we are printing the size of different primitive data types, the size returned through the sizeof() operator is in bytes.

在下面的程序中，我们将打印不同原始数据类型的大小，通过sizeof()运算符返回的大小以字节为单位。

// C# program to demonstrate example of sizeof() operator
using System;
using System.IO;
using System.Text;
namespace IncludeHelp
{
class Test
{
// Main Method 
static void Main(string[] args)
{
Console.WriteLine("sizeof(byte)     : {0}", sizeof(byte));
Console.WriteLine("sizeof(sbyte)    : {0}", sizeof(sbyte));
Console.WriteLine("sizeof(short)    : {0}", sizeof(short));
Console.WriteLine("sizeof(ushort)   : {0}", sizeof(ushort));
Console.WriteLine("sizeof(char)     : {0}", sizeof(char));
Console.WriteLine("sizeof(int)      : {0}", sizeof(int));
Console.WriteLine("sizeof(float)    : {0}", sizeof(float));
Console.WriteLine("sizeof(double)   : {0}", sizeof(double));
Console.WriteLine("sizeof(bool)     : {0}", sizeof(bool));
//hit ENTER to exit the program
Console.ReadLine();
}
}
}

Output

输出量

sizeof(byte)     : 1
sizeof(sbyte)    : 1
sizeof(short)    : 2
sizeof(ushort)   : 2
sizeof(char)     : 2
sizeof(int)      : 4
sizeof(float)    : 4
sizeof(double)   : 8
sizeof(bool)     : 1