c++ strlen长度为2

    uint8_t audioData[1024] = {0};
    uint8_t *senddata = audioData;
    uint8_t *psenddata = senddata;
    uint8_t data[12] = {0xa, 0xb, 0xc, 0xd, 0xc, 0xc, 0xd, 0xd, 0xe, 0xe, 0xf, 0xf};

    /* audio head */
    audio.u16Head = 0xabcd;
    audio.u32FrameId = i++;
    audio.u32PacketType = 1;
    audio.u64SendTime = 12345678;
    audio.u64AudioTime = 12345678;
    audio.u16AudioType = 3;
    audio.u32SampleRate = 16000;
    audio.u16BitWidth = 16;
    audio.u16AudioMode = 1;
    audio.u32DataSize = len;
    audio.u32Reserve0 = 0;
    audio.u32Reserve1 = 0;

    memcpy(senddata, reinterpret_cast<void*>(&audio), sizeof(AudioHead_ST));
    memcpy(senddata + sizeof(struct AudioHead_ST), reinterpret_cast<void*>(data), len);
    printf("0x%08x 0x%08x 0x%08x 0x%08x\n", sizeof(audio), sizeof(DataInfo_ST),
                std::strlen(reinterpret_cast<const char*>(senddata)),
                std::strlen(reinterpret_cast<const char*>(psenddata)));    // 0x00000034 0x00000030 0x00000002 0x00000002

    打印 senddata 中的数据后，为 2 就清晰明了了。

0xcd 0xab 0x00 0x00 0x01 0x00 0x00 0x00 0x01 0x00 0x00 0x00 0x4e 0x61 0xbc 0x00 0x00 0x00 0x00 0x00 0x4e 0x61 0xbc 0x00 0x00 0x00 0x00 0x00 0x03 0x00 0x00 0x00 0x80 0x3e 0x00 0x00 0x10 0x00 0x01 0x00 0x0c 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x0a 0x0b 0x0c 0x0d 0x0c 0x0c 0x0d 0x0d 0x0e 0x0e 0x0f 0x0f