| Specifier | Common Equivalent | Signing | Bits | Bytes | Minimum Value | Maximum Value |
|---|---|---|---|---|---|---|
int8_t |
signed char |
Signed | 8 | 1 | −128 | 127 |
uint8_t |
unsigned char |
Unsigned | 8 | 1 | 0 | 255 |
int16_t |
short |
Signed | 16 | 2 | −32,768 | 32,767 |
uint16_t |
unsigned short |
Unsigned | 16 | 2 | 0 | 65,535 |
int32_t |
int |
Signed | 32 | 4 | −2,147,483,648 | 2,147,483,647 |
uint32_t |
unsigned int |
Unsigned | 32 | 4 | 0 | 4,294,967,295 |
int64_t |
long long |
Signed | 64 | 8 | −9,223,372,036,854,775,808 | 9,223,372,036,854,775,807 |
uint64_t |
unsigned long long |
Unsigned | 64 | 8 | 0 | 18,446,744,073,709,551,615 |
上面是一些与平台无关的数据类型，由于在32位机器和64位机器中，long占据不同的字节数，所以推荐使用上面的类型。。上面的类型的头文件是stdint.h
原文：http://www.cnblogs.com/DswCnblog/p/5667032.html