little endian , big endian 判別方式

ex: 0x11223344

記憶體              little endian            big endian
0x00                   0x44                        0x11
0x01                   0x33                        0x22
0x02                   0x22                        0x33
0x03                   0x11                        0x44


所以換個方式想
ex:0x1

記憶體            little endian             big endian
0x00                  0x1                           0x0
0x01                  0x0                           0x0
0x02                  0x0                           0x0
0x03                  0x0                           0x0

#include <stdlib.h>
#include <stdio.h>

int main(void)
{
 unsigned int value = 0x1;
 char *BytePtr = (char*)&value;
 
 if(*BytePtr)
  printf("little endian\n");
 else
  printf("big endian");
 
 return 0;
}

而通常會用在embedded system , 雖然大多數都是little endian