测试你的机器是大端规则还是小端规则

/* little endian versus big endian */ /* * add: z z+1 z+2 z+3 * mem: 0D 0C 0B 0A //big endian * mem: 0A 0B 0C 0D //little endian * V = 0x0D0C0B0A */ #include <stdio.h> #include <stdlib.h> int main(void) { int V = 0x0D0C0B0A; char c = *(char *)(&V); if (c == 0x0A || c == 0x0D) { if (c == 0x0A) printf("little endian machine"); else printf("big endian machine"); } else printf("test error"); putchar('/n'); exit(0); }