Is there a way to index an array in c++, like in python?

In order to write a packet sniffer I need to be able to index through the bytes of the packet.

I have come from python, in python you can index through a list very easily eg;

variable = data[2:5]. In c++ you can't do it like that.

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Here is a snippet of my code

void ethernet_frame(char raw_data[19]){

    struct ethernet{ 
        char dest_mac[6] = get_mac_addr(raw_data[:7]);
        char src_mac[6] = get_mac_addr(raw_data[7:14]);
        unsigned short proto  = proto[14:17]; 
    };
}

I expect that there is an alternative or perhaps a library I can use to index through the packet.