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代码： 全选

#include <stdio.h>
#include <string.h>

int main(){
    char buf[16]  = { 0x96,0x8b,0xea,0xde,0x52,0xc7,0x18,0x82,0x1a,0x23,0x2e,0x07,0x24,0x80,0xe3,0x47 };
    int i;
    for (i = 0; i < 16; ++i)
        printf ("%02x ", buf[i] & 0xFF);
    printf("\n\n");
    for (i = 0; i < 16; ++i)
        printf ("%02x ", buf[i]);
    printf("\n");
}

代码： 全选

$ ./a.out 
96 8b ea de 52 c7 18 82 1a 23 2e 07 24 80 e3 47 

ffffff96 ffffff8b ffffffea ffffffde 52 ffffffc7 18 ffffff82 1a 23 2e 07 24 ffffff80 ffffffe3 47