c语言limits.h

C ++宏常量(整数类型的大小) (C++ Macro constants of (sizes of integral types))

In this tutorial, we are learning about some of the defined macro constants which are used to find the sizes of the integral types like a character, short, integer, long integer, long long integer. These macro constants are used to find the minimum and maximum size of any integral type of data type.

在本教程中，我们将学习一些定义的宏常量 ，这些常量用于查找整数类型的大小，例如字符，短整数，长整数，长整数。 这些宏常量用于查找任何整数类型的数据类型的最小和最大大小。

These macros are defined in <limits.h> header file and <climits> header (for C++ 11).

这些宏在<limits.h>头文件和<climits>头文件中定义(对于C ++ 11)。

C ++中的宏常量列表 (List of Macro constants in C++)

Here, is the list of the macro constants that can be used to find the sizes, minimum and maximum values of the specific integral data types.

此处是宏常量列表，可用于查找特定整数数据类型的大小，最小值和最大值 。

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* 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的实现。

Reference: C++ <climits> (limits.h)

参考： C ++ <climits>(limits.h)

C ++程序打印整数类型的大小 (C++ program to print the size of integral types)

// C++ program to print the size of integral types
#include<iostream>
#include<climits>
using namespace std;
int main()
{cout << "CHAR_BIT        " << CHAR_BIT    << endl;
cout << "SCHAR_MIN       " << SCHAR_MIN   << endl;
cout << "SCHAR_MAX       " << SCHAR_MAX   << endl;
cout << "UCHAR_MAX       " << UCHAR_MAX   << endl;
cout << "CHAR_MIN        " << CHAR_MIN    << endl;
cout << "CHAR_MAX        " << CHAR_MAX    << endl;
cout << "MB_LEN_MAX      " << MB_LEN_MAX << endl;
cout << "SHRT_MIN        " << SHRT_MIN    << endl;
cout << "SHRT_MAX        " << SHRT_MAX    << endl;
cout << "USHRT_MAX       " << USHRT_MAX   << endl;
cout << "INT_MIN         " << INT_MIN     << endl;
cout << "INT_MAX         " << INT_MAX     << endl;
cout << "UINT_MAX        " << UINT_MAX    << endl;
cout << "LONG_MIN        " << LONG_MIN    << endl;
cout << "LONG_MAX        " << LONG_MAX    << endl;
cout << "ULONG_MAX       " << ULONG_MAX   << endl;
cout << "LLONG_MIN       " << LLONG_MIN   << endl;
cout << "LLONG_MAX       " << LLONG_MAX   << endl;
cout << "ULLONG_MAX      " << ULLONG_MAX  << endl;
return 0;
}

Output

输出量

CHAR_BIT                8
SCHAR_MIN               -128
SCHAR_MAX               127
UCHAR_MAX               255
CHAR_MIN                -128
CHAR_MAX                127
MB_LEN_MAX              16
SHRT_MIN                -32768
SHRT_MAX                32767
USHRT_MAX               65535
INT_MIN                 -2147483648
INT_MAX                 2147483647
UINT_MAX                4294967295
LONG_MIN                -9223372036854775808
LONG_MAX                9223372036854775807
ULONG_MAX               18446744073709551615
LLONG_MIN               -9223372036854775808
LLONG_MAX               9223372036854775807
ULLONG_MAX              18446744073709551615

翻译自: https://www.includehelp.com/cpp-tutorial/macro-constants-of-sizes-of-integral-types.aspx

c语言limits.h