关键字是用于某些内部过程或表示某些预定义动作的语言中的单词。 byte是用于声明变量的关键字,该变量可以存储从0到255的无符号值范围。它是System.Byte的别名。
byte关键字在内存中占用1个字节(8位)。
句法:
byte variable_name = value;
例子:
Input: 250
Output: number: 250
Size of a byte variable: 1
Input: 150
Output: Type of num1: System.Byte
num1: 150
Size of a byte variable: 1
范例1:
// C# program to show the usage of byte keyword
using System;
using System.Text;
class GFG {
static void Main(string[] args)
{
// byte variable declaration
byte num = 255;
// to print value
Console.WriteLine("num: " + num);
// to print size of a byte
Console.WriteLine("Size of a byte variable: " + sizeof(byte));
}
}
输出:
num: 255
Size of a byte variable: 1
范例2:
// C# program to show the usage of byte keyword
using System;
using System.Text;
class GFG {
static void Main(string[] args)
{
// byte variable declaration
byte num1 = 261;
// to print value
Console.WriteLine("num1: " + num1);
// to print size of a byte
Console.WriteLine("Size of a byte variable: " + sizeof(byte));
}
}
错误:输入的数字超出(0-255)范围时。
Constant value `261' cannot be converted to a `byte'
范例3:
// C# program to show the usage of byte keyword
using System;
using System.Text;
namespace geeks {
class GFG {
static void Main(string[] args)
{
// byte variable declaration
byte num1 = 150;
// to print type of variable
Console.WriteLine("Type of num1: " + num1.GetType());
// to print value
Console.WriteLine("num1: " + num1);
// to print size of a byte
Console.WriteLine("Size of a byte variable: " + sizeof(byte));
// hit ENTER to exit
Console.ReadLine();
}
}
}
输出:
Type of num1: System.Byte
num1: 150
Size of a byte variable: 1