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一些整数类型的表示范围

unsigned int    04294967295 
int             -21474836482147483647 
unsigned long   04294967295
long            -21474836482147483647
long long:     -9223372036854775808~9223372036854775807
unsigned long long的最大值:  1844674407370955161
__int64:       -9223372036854775808~9223372036854775807
unsigned __int64的最大值:   18446744073709551615

float的范围为 -2^128 ~ +2^128 也即-3.40E+38 ~ +3.40E+38

double的范围为 -2^1024 ~ +2^1024 也即-1.79E+308 ~ +1.79E+308

 

posted @ 2014-11-04 22:12 whatbeg 阅读(...) 评论(...) 编辑 收藏