strcmp()字符串比较函数用法问题

int main(void)
{
        unsigned char a[2];
        unsigned char b[2];
        a[0]=0x01;a[1]=0x02;
        b[0]=0x01;b[1]=0x02;
        int ret=strcmp((char *)a,(char *)b);
        printf("%d\n",ret);

        return 0;
}
"strcmp.c" 15L, 236C 已写入                                                                                                                               
root@ospicon-ubuntu:/home/liugang/testcode# gcc strcmp.c -o a
root@ospicon-ubuntu:/home/liugang/testcode# ./a
63 

#include 
#include 
#include 


int main(void)
{
        unsigned char a[3];
        memset(a,'\0',3);
        unsigned char b[3];
        memset(b,'\0',3);
        a[0]=0x01;a[1]=0x02;
        b[0]=0x01;b[1]=0x02;
        int ret=strcmp((char *)a,(char *)b);
        printf("%d\n",ret);


        return 0;
}

"strcmp.c" 17L, 274C 已写入                                                                                                                               
root@ospicon-ubuntu:/home/liugang/testcode# 
root@ospicon-ubuntu:/home/liugang/testcode# gcc strcmp.c -o a
root@ospicon-ubuntu:/home/liugang/testcode# ./a
0
 
  
 
  
 
  
 
  
以此可判断，strcmp对比的终止条件应该类似 s++='\0'.所以在有的时候需要注意这个问题。