c - MPLAB IDE 数据类型大小

Question

在 MPLAB IDE 中，数据类型的大小是多少(int、unsigned int、float、unsigned float, char...)?

Answer 1

如果不知道要为哪个 CPU 编译代码，这很难。假设例如Microchip 的 PIC18 C18 编译器，User Guide声明以下基本类型大小:

TYPE                SIZE     RANGE
char(1,2)            8 bits  -128 127
signed char          8 bits  -128 127
unsigned char        8 bits  0 255
int                 16 bits  -32,768 32,767
unsigned int        16 bits  0 65,535
short               16 bits  -32,768 32,767
unsigned short      16 bits  0 65,535
short long          24 bits  -8,388,608 8,388,607
unsigned short long 24 bits  0 16,777,215
long                32 bits  -2,147,483,648 2,147,483,647
unsigned long       32 bits  0 4,294,967,295

请注意，这包括一些在 C 中不是标准的类型(short long)。