long long的最大值：9223372036854775807
long long的最小值：-9223372036854775808
unsigned long long的最大值：1844674407370955161
__int64的最大值：9223372036854775807
__int64的最小值：-9223372036854775808
unsigned __int64的最大值：18446744073709551615
我的电脑对__int128不支持，这个可能是预留给将来的吧：
view plaincopy to clipboardprint?
#if _INTEGRAL_MAX_BITS >= 128
#define _I128_MIN (-170141183460469231731687303715884105727i128 - 1)
#define _I128_MAX 170141183460469231731687303715884105727i128
#define _UI128_MAX 0xffffffffffffffffffffffffffffffffui128
#endif
#if <wbr> <wbr> <wbr> <wbr> _INTEGRAL_MAX_BITS >= 128
#define _I128_MIN <wbr> <wbr> (-170141183460469231731687<wbr>303715884105727i128 - 1)
#define _I128_MAX <wbr> <wbr> <wbr> <wbr> 170141183460469231731687<wbr>303715884105727i128
#define _UI128_MAX <wbr> <wbr> <wbr> <wbr>0xffffffffffffffffffffff<wbr>ffffffffffui128
#endif
搜索了一下_INTEGRAL_MAX_BITS ,找到一篇说明，都是EN文的，看意思也是预留了，哈
把链接也记下来吧：
http://gcc.gnu.org/ml/gcc-patches/2004-07/msg00465.html
通过程序来实现查看：
view plaincopy to clipboardprint?
#include<iostream>
#include<climits>
using namespace std;
int main()
{
cout<<"long long的最大值："<<LLONG_MAX<<endl;
cout<<"long long的最小值："<<LLONG_MIN<<endl;
cout<<"unsigned long long的最大值："<<UL
