struct Request
{
    char b[4];
    uint16_t operand1;
    uint16_t operand2;
};

struct Response
{
    char b[4];
    int32_t answer;
};

struct Request process(char *msg)
{
    struct Request req;
    char *input = NULL;
    char space[] = " ";

    req.b[0] = 0;
    req.b[1] = 0;
    req.b[2] = 0;

    input = strtok(msg, space);
    req.b[3] = input;

    input = strtok(NULL, space);
    req.operand1 = htonl((uint16_t)input);

    input = strtok(NULL, space);
    input[strlen(input)-1] = '\0';
    req.operand2 = htonl((uint16_t)input);

    return req;
}