ANSI C 标准组合的类型、字长和范围
| 序号 |
类型 |
字长 |
范围 |
| 1 |
char(字符型) |
1字节 |
-128~127 |
| 2 |
unsigned char (无符号字符型) |
1字节 |
0~255 |
| 3 |
signed char (有符号字符型) |
1字节 |
-128~127 |
| 4 |
int (整型) |
2字节 |
-32768~32767 |
| 5 |
unsigned int (无符号整型) |
2字节 |
0~65535 |
| 6 |
signed int (有符号整型) |
2字节 |
-32768~32767 |
| 7 |
short int (短整型) |
1字节 |
-128~127 |
| 8 |
unsigned short int (无符号短整型) |
1字节 |
0~255 |
| 9 |
signed short int (有符号短整型) |
1字节 |
-128~127 |
| 10 |
long int (长整型) |
4字节 |
-2147483648~2147483647 |
| 11 |
unsigned long int (无符号长整型) |
4字节 |
0~4294967296 |
| 12 |
signed long int (有符号长整型) |
4字节 |
-2147483648~2147483647 |
| 13 |
float (单精度浮点型) |
4字节 |
约精确到6位数 |
| 14 |
double (双精度浮点型) |
8字节 |
约精确到12位数 |
| 15 |
void (空值型) |
0字节 |
无值 |