2.1 C语言数据类型
| 关键字 |
位数 |
表示范围 |
stdint关键字 |
ST关键字 |
| char |
8 |
-128 ~ 127 |
int8_t |
s8 |
| unsigned char |
8 |
0 ~ 255 |
uint8_t |
u8 |
| short |
16 |
-32768 ~ 32767 |
int16_t |
s16 |
| unsigned short |
16 |
0 ~ 65535 |
uint16_t |
u16 |
| int |
32 |
-2147483648 ~ 2147483647 |
int32_t |
s32 |
| unsigned int |
32 |
0 ~ 4294967295 |
uint32_t |
u32 |
| long |
32 |
-2147483648 ~ 2147483647 |
|
|
| unsigned long |
32 |
0 ~ 4294967295 |
|
|
| long long |
64 |
-(2^64)/2 ~ (2^64)/2-1 |
int64_t |
|
| unsigned long long |
64 |
0 ~ (2^64)-1 |
uint64_t |
|
| float |
32 |
-3.4e38 ~ 3.4e38 |
|
|
| double |
64 |
-1.7e308 ~ 1.7e308 |
|
|
2.2 C语言宏定义
2.3 C语言typedef
2.4 C语言结构体
2.5 C语言枚举
