Linux环境下读取24位BMP图像出现问题

 #include <stdio.h>

    
 #include <stdlib.h>
    
 #include<malloc.h>
    
 #include <pthread.h>
    
 #include <sys/shm.h>
    
 #include<sys/types.h>
    
 #include<sys/ipc.h>
    
 #include<unistd.h>
    
  
    
 #pragma pack(2)
    
  
    
 typedef unsigned char  BYTE;
    
 typedef unsigned short WORD;
    
 typedef unsigned long DWORD;
    
 //typedef long LONG;
    
  
    
 //位图文件头定义
    
 typedef struct BMP_FILE_HEADER
    
 {
    
     WORD bType;                                          //文件类型
    
 	DWORD bSize;
    
 	WORD bReserv