c++各种数据类型表示范围

符号属性     长度属性     基本型     所占位数     取值范围       输入符举例      输出符举例

--            --          char         8         -2^7 ~ 2^7-1        %c          %c、%d、%u
signed        --          char         8         -2^7 ~ 2^7-1        %c          %c、%d、%u
unsigned      --          char         8         0 ~ 2^8-1           %c          %c、%d、%u

[signed]      short       [int]        16        -2^15 ~ 2^15-1              %hd
unsigned      short       [int]        16        0 ~ 2^16-1             %hu、%ho、%hx

[signed]      --           int         32        -2^31 ~ 2^31-1              %d
unsigned      --          [int]        32        0 ~ 2^32-1              %u、%o、%x

[signed]      long        [int]        32        -2^31 ~ 2^31-1              %ld
unsigned      long        [int]        32        0 ~ 2^32-1             %lu、%lo、%lx

[signed]      long long   [int]        64        -2^63 ~ 2^63-1             %I64d
unsigned      long long   [int]        64        0 ~ 2^64-1          %I64u、%I64o、%I64x

--            --          float        32       +/- 3.40282e+038         %f、%e、%g
--            --          double       64       +/- 1.79769e+308 %lf、%le、%lg   %f、%e、%g
--            long        double       96       +/- 1.79769e+308        %Lf、%Le、%Lg

#include<iostream>
#include <limits>
using namespace std;

int main()
{
	//bool
	cout << "bool: 		" << "所占字节数：" << sizeof(bool);
	cout << "	最大值：" << (numeric_limits<bool>::max)();
	cout << "		最小值：" << (numeric_limits<bool>::min)() << endl;
	//char
	cout << "char: 		" << "所占字节数：" << sizeof(char);
	cout << "	最大值：" << (numeric_limits<char>::max)();
	cout << "		最小值：" << (numeric_limits<char>::min)() << endl;
	//signed char
	cout << "signed char: 	" << "所占字节数：" << sizeof(signed char);
	cout << "	最大值：" << (numeric_limits<signed char>::max)();
	cout << "		最小值：" << (numeric_limits<signed char>::min)() << endl;
	//unsigned char
	cout << "unsigned char: 	" << "所占字节数：" << sizeof(unsigned char);
	cout << "	最大值：" << (numeric_limits<unsigned char>::max)();
	cout << "		最小值：" << (numeric_limits<unsigned char>::min)() << endl;
	//wchar_t
	cout << "wchar_t: 	" << "所占字节数：" << sizeof(wchar_t);
	cout << "	最大值：" << (numeric_limits<wchar_t>::max)();
	cout << "		最小值：" << (numeric_limits<wchar_t>::min)() << endl;
	//short
	cout << "short: 		" << "所占字节数：" << sizeof(short);
	cout << "	最大值：" << (numeric_limits<short>::max)();
	cout << "		最小值：" << (numeric_limits<short>::min)() << endl;
	//int
	cout << "int: 		" << "所占字节数：" << sizeof(int);
	cout << "	最大值：" << (numeric_limits<int>::max)();
	cout << "	最小值：" << (numeric_limits<int>::min)() << endl;
	//unsigned
	cout << "unsigned: 	" << "所占字节数：" << sizeof(unsigned);
	cout << "	最大值：" << (numeric_limits<unsigned>::max)();
	cout << "	最小值：" << (numeric_limits<unsigned>::min)() << endl;
	//long
	cout << "long: 		" << "所占字节数：" << sizeof(long);
	cout << "	最大值：" << (numeric_limits<long>::max)();
	cout << "	最小值：" << (numeric_limits<long>::min)() << endl;
	//unsigned long
	cout << "unsigned long: 	" << "所占字节数：" << sizeof(unsigned long);
	cout << "	最大值：" << (numeric_limits<unsigned long>::max)();
	cout << "	最小值：" << (numeric_limits<unsigned long>::min)() << endl;
	//float
	cout << "float: 		" << "所占字节数：" << sizeof(float);
	cout << "	最大值：" << (numeric_limits<float>::max)();
	cout << "	最小值：" << (numeric_limits<float>::min)() << endl;
	//size_t
	cout << "size_t: 	" << "所占字节数：" << sizeof(size_t);
	cout << "	最大值：" << (numeric_limits<size_t>::max)();
	cout << "	最小值：" << (numeric_limits<size_t>::min)() << endl;
	//double
	cout << "double: 	" << "所占字节数：" << sizeof(double);
	cout << "	最大值：" << (numeric_limits<double>::max)();
	cout << "	最小值：" << (numeric_limits<double>::min)() << endl;
	//long long
	cout << "long long: 	" << "所占字节数：" << sizeof(long long);
	cout << "	最大值：" << (numeric_limits<long long>::max)();
	cout << "	最小值：" << (numeric_limits<long long>::min)() << endl;
	//long double
	cout << "long double: 	" << "所占字节数：" << sizeof(long double);
	cout << "	最大值：" << (numeric_limits<long double>::max)();
	cout << "	最小值：" << (numeric_limits<long double>::min)() << endl;
	return 0;
}