C ++ MB_LEN_MAX宏常量 (C++ MB_LEN_MAX macro constant)

MB_LEN_MAX constant is a macro constant which is defied in climits header, it is used to get the maximum number of bytes in a multibyte character, for any locale, it returns maximum number of bytes that a multibyte character, which is 1 or more than it.

MB_LEN_MAX常数是在climits标头中定义的宏常数，用于获取多字节字符中的最大字节数，对于任何语言环境，它都返回一个多字节字符的最大字节数，即大于或等于1 。

Note:

注意：

• The actual value depends on the compiler architecture or library implementation.

  实际值取决于编译器体系结构或库实现。

• We can also use <limits.h> header file instead of <climits> header as MB_LEN_MAX constant is defined in both of the libraries.

  我们也可以使用<limits.h>头文件代替<climits>头文件，因为在两个库中都定义了MB_LEN_MAX常量 。

Syntax of MB_LEN_MAX constant:

MB_LEN_MAX常数的语法：

    MB_LEN_MAX

Example:

例：

    Constant call:
cout << MB_LEN_MAX;
Output:
16

C ++代码演示带有climits标头的MB_LEN_MAX常量示例 (C++ code to demonstrate example of MB_LEN_MAX constant with climits header)

// C++ code to demonstrate example of
// MB_LEN_MAX constant with climits header
#include<iostream>
#include<climits>
using namespace std;
int main()
{//prinitng the value of MB_LEN_MAX
cout<<"MB_LEN_MAX: "<<MB_LEN_MAX<<endl;
return 0;
}

Output

输出量

MB_LEN_MAX: 16

C ++代码演示带有limits.h头文件的MB_LEN_MAX常量的示例 (C++ code to demonstrate example of MB_LEN_MAX constant with limits.h header file)

// C++ code to demonstrate example of
// MB_LEN_MAX constant with <limits.h> header file
#include<iostream>
#include<limits.h>
using namespace std;
int main()
{//prinitng the value of MB_LEN_MAX
cout<<"MB_LEN_MAX: "<<MB_LEN_MAX<<endl;
return 0;
}

Output

输出量

MB_LEN_MAX: 16

翻译自: https://www.includehelp.com/cpp-tutorial/MB_LEN_MAX-constant-with-example.aspx