c#格式化字float_C＃中的float关键字

妖狐艹你老母 2023-03-05 09:54 25阅读 0赞

c\#格式化字float

## C＃float关键字 **(**C\# float keyword**)** ##

In C\#, **float** is a keyword which is used to declare a variable that can store a floating point value between the range of **±1.5 x 10−45 to ±3.4 x 1038**. **float keyword** is an alias of System.Single.

在C＃中， **float**是一个关键字，用于声明一个变量，该变量可以存储介于**±1.5 x 10 \-45到±3.4 x 10 38**范围内的浮点值。 **float关键字**是System.Single的别名。

It occupies 4 bytes (32 bits) space in the memory.

它在内存中占用4个字节(32位)的空间。

**Note:** To represent a float value, we use a suffix f or F with the value.

**注意：**为了表示浮点值，我们使用后缀f或F。

**Syntax:**

**句法：**

float variable_name = value;

## C＃代码演示float关键字示例 **(**C\# code to demonstrate example of float keyword**)** ##

Here, we are declaring a float variable num, initializing it with the value **12345.6789f** and printing its value, type and size of a **float type variable**.

在这里，我们声明一个float变量num ，使用值**12345.6789f**对其进行初始化，并打印其值，类型和**float类型变量的**大小。

using System;
    using System.Text;
    
    namespace Test
    {
        
        class Program
        {
        
            static void Main(string[] args)
            {
        
                //variable declaration
                float num = 12345.6789f;
    
                //printing value
                Console.WriteLine("num: " + num);
                //printing type of variable
                Console.WriteLine("Type of num: " + num.GetType());
                //printing size
                Console.WriteLine("Size of a float variable: " + sizeof(float));
                //printing minimum & maximum value of float
                Console.WriteLine("Min value of float: " + float.MinValue);
                Console.WriteLine("Max value of float: " + float.MaxValue);
    
                //hit ENTER to exit
                Console.ReadLine();
            }
        }
    }

**Output**

**输出量**

num: 12345.68
    Type of num: System.Single
    Size of a float variable: 4
    Min value of float: -3.402823E+38
    Max value of float: 3.402823E+38

> 翻译自: [https://www.includehelp.com/dot-net/float-keyword-in-c-sharp.aspx][https_www.includehelp.com_dot-net_float-keyword-in-c-sharp.aspx]

c\#格式化字float

[https_www.includehelp.com_dot-net_float-keyword-in-c-sharp.aspx]: https://www.includehelp.com/dot-net/float-keyword-in-c-sharp.aspx