c++常用变量值的范围

int,long,unsigned的值范围

unsigned int —— 0～4294967295

int —— -2147483648～2147483647

unsigned long —— 0～4294967295

long —— -2147483648～2147483647

long long —— -9223372036854775808 ~ 9223372036854775807

unsigned long long —— 0~18446744073709551615

__int64与long long貌似是一样的