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unsigned char *icp;
const char ch[] = "02001401018200000C334455660000000000000000";
icp = (unsigned char *)malloc(strlen(ch) /2 +1);
int i;
for (i =0;i < strlen(ch)-1 ;i+=2)
icp[i/2] = (ch[i]-'0') *16 + ch[i+1]-'0';
。。。。
free(icp);