int的取值范围是多少？int不够用应该用哪个类型？

[koji002]

int的取值范围是多少？int不够用应该用哪个类型？

[diudiuqqqq]

-32767 - 32767

[lzd]

int * signed,
signed int System dependent
unsigned int * unsigned System dependent
__int8 1 char,
signed char –128 to 127
__int16 2 short,
short int,
signed short int –32,768 to 32,767
__int32 4 signed,
signed int –2,147,483,648 to 2,147,483,647
__int64 8 none –9,223,372,036,854,775,808 to 9,223,372,036,854,775,807
bool 1 none false or true
char 1 signed char –128 to 127
unsigned char 1 none 0 to 255
short 2 short int,
signed short int –32,768 to 32,767
unsigned short 2 unsigned short int 0 to 65,535
long 4 long int,
signed long int –2,147,483,648 to 2,147,483,647
long long 8 none (but equivalent to __int64) –9,223,372,036,854,775,808 to 9,223,372,036,854,775,807
unsigned long 4 unsigned long int 0 to 4,294,967,295
enum * none Same as int
float 4 none 3.4E +/- 38 (7 digits)
double 8 none 1.7E +/- 308 (15 digits)
long double same as double none same as double
wchar_t 2 __wchar_t 0 to 65,535

[lzd]

int在32机器上是占4字节。。在64位的机器上又不同


你可以用__int32,__int64型。。。

[vincen_cn]

-32767 - 32767
__int64
long int
long long

[i_love_pc]

long

[syy64]

int 16位有效位。

[plphoenix]

int的取值范围是和操作系统相关的，dos下面的是16位，windows下面是32位。但是long这个类型是固定32位的，所以写程序的时候要注意用sizeof来确定int的大小