void addFlight(int flight_counter){
    int fcl = 1, dl = 1, i;
    while(fcl){
        i = 0;
        char temp[MAX_FLIGHTCODE_LENGTH];


        printf("Enter flight code>\n");
        scanf("  %[^\n]s", temp);
        for(i = 0; i <= MAX_FLIGHTCODE_LENGTH; i++){
            if(i < 2 && temp[i] >= 'A' && temp[i] <= 'Z'){
                flights[flight_counter].flightcode[i] = temp[i];
            }
            else if(i >= 2 && temp[i] >= '0' && temp[i] <= '9'){
                flights[flight_counter].flightcode[i] = temp[i];
            }
            else if((temp[i] == '\0' || temp[i] == '\n') && i != 2){
                fcl = 0;
            }
            else{
                printf("Invalid input\n");
                for(i = 0; i <= MAX_FLIGHTCODE_LENGTH; i++){
                    temp[i] = '\0';
                }
                fcl = 1;
            }
        }
    }
    while(dl){
        struct dt_temp{
            int month;
            int day;
            int hour;
            int minute;
        };
        typedef struct dt_temp dt_temp_t;
        printf("Enter departure info for the flight leaving SYD.\n");
        printf("Enter month, date, hour and minute separated by spaces>\n");
        scanf(" %d", &flights[flight_counter].departure_dt.month);
        scanf(" %d", &flights[flight_counter].departure_dt.day);
        scanf(" %d", &flights[flight_counter].departure_dt.hour);
        scanf(" %d", &flights[flight_counter].departure_dt.minute);
        printf("%d %d %d %d\n", flights[flight_counter].departure_dt.month, flights[flight_counter].departure_dt.day, flights[flight_counter].departure_dt.hour, flights[flight_counter].departure_dt.minute);
        if(dt_temp_t.month > 0 && dt_temp_t.month <= 12){

        }
    }

}