ask help for the format of outcome IQ data

[kainwen]

Hello,
      I use rtl_sdr to collect some data into a bin file(file.bin).
      As from the wiki, I think it is parsed like this :
/fd = open("file.bin","r") ;//
//        char I[];//
//        char Q[];//
////loop ://
//             read(fd, I, 1) ;//
//             read(fd, Q,1) ;//
//        endloop//
//        char *p = Q ;//
//        loop ://
//            printf("%f\n", (float*)p);//
//            p += 4 ;//
////endloop/
      But this code can only print 0.00000

      I don't know where the error is.
      Please help me.
      Thank you.
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