What does word mean in C language?

In C language, word is a data type that represents the natural unit data size in computer architecture, usually 32 bits or 64 bits. It is often used to store pointers, optimize memory access, and low-level programming. Its size can be obtained through the sizeof(word) macro, and the maximum and minimum values ​​are WORD_MAX and WORD_MIN respectively.

word

In C language,word is a data type that represents a natural unit of data size in computer architecture, usually 32 or 64 bits.

Purpose

##word The type is often used in the following situations:

Storage pointers: the size of the pointer is the same as
• word are equal in size, so word is ideal for storing pointers.
Optimize memory access: By using
• word to align data, memory access efficiency can be improved.
Low-level programming:
• word is used to directly operate hardware registers or perform bit operations.

Size

# The size of word depends on the computer architecture:

32-bit architecture : 32-bit
• 64-bit architecture: 64-bit

Usage

Can be used in C language

word Variables of type:

word num = 0x12345678;

can also be accessed using the following predefined macros

word Size:

##sizeof(word)
• : word Size of the type in bytes
WORD_MAX
• : word Maximum value of the type
WORD_MIN
• : Minimum value of type word

Example

Here is an example using

word

Example code for type:

#include <stdint.h>

int main() {
  word pointer; // 32 位或 64 位指针

  // 将指针赋值给一个地址
  pointer = 0x10000000;

  // 使用指针访问内存
  *pointer = 0x55;

  return 0;
}

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