判断机器的字节序

刚刚写了一个判断机器字节序的程序：

/* * FileName: byteorder.c * 用途：用来测试机器的字节序 */#include <stdio.h>#include <stdlib.h>int main(void){union {short s;char c[sizeof(short)];} un;un.s = 0x0102;if (un.c[0] == 1 && un.c[1] == 2){printf("Big-Endian\n");}if (un.c[0] == 2 && un.c[1] == 1){printf("Little-Endian\n");}exit(0);}