#include

#include

#include

/******************************************************************************* * List preprocessing directives - you may define your own. *******************************************************************************/ #define MAX_FLIGHTCODE_LEN 6 #define MAX_CITYCODE_LEN 3 #define MAX_NUM_FLIGHTS 5 #define DB_NAME "database.txt"

/******************************************************************************* * List structs - you may define struct date and struct student only. Each * struct definition should have only the fields mentioned in the assignment * description. *******************************************************************************/

struct date_time { int month; int day; int hour; int minute; }; typedef struct date_time date_time_t;

struct flight { char flightcode [MAX_FLIGHTCODE_LEN+1]; date_time_t departure_t; char arrival_city [MAX_CITYCODE_LEN+1]; date_time_t arrival_t; }; typedef struct flight flight_t;

int size = 0;

/******************************************************************************* * Function prototypes - do NOT change the given prototypes. However you may * define your own functions if required. *******************************************************************************/ void print_menu (void); void make_flight(int counter, flight_t f[]); int check_flight(int counter, flight_t flights[], char f[MAX_FLIGHTCODE_LEN+1]); void print_flight(int counter, flight_t flights[], char f[MAX_FLIGHTCODE_LEN+1]); void print_flights_all(int counter, flight_t flights[counter]); int write_flight(flight_t flights[], int counter); int read_flight(flight_t flights[], int counter);

/******************************************************************************* * Main *******************************************************************************/ int main(void) { int choice; char second_choice[MAX_FLIGHTCODE_LEN+1]; int counter=0; int test; flight_t flights[MAX_NUM_FLIGHTS];

do { fflush(stdin); print_menu(); scanf("%d", &choice); int choice; if ((1 == scanf("%d", &choice)) && choice >= 1 && choice <= 5) {

switch(choice) { case 1: { make_flight(counter, flights); counter++; break; } case 2: { printf("Enter arrival city code or enter * to show all destinations> "); scanf("%s",second_choice);

if (second_choice[0]=='*') { print_flights_all(counter, flights); } else if (counter<=0) { printf("No flights "); } else { test=check_flight(counter, flights, second_choice); if (test==0) { printf("No flights "); } else { print_flight(counter, flights, second_choice); } } break; } case 3: { write_flight(flights, counter); break;

} case 4: { int read_counter; FILE* fpr = NULL; fpr = fopen(DB_NAME, "r"); if (fpr == NULL) { printf("Read error "); break; } fscanf(fpr, "%d", &counter); for (read_counter=0; read_counter

/******************************************************************************* * Functions *******************************************************************************/

/* Displays menu */ void print_menu (void) { printf(" " "1. add a flight " "2. display all flights to a destination " "3. save the flights to the database file " "4. load the flights from the database file " "5. exit the program " "Enter choice (number between 1-5)> "); }

/* Prompts user to input flight details */ void make_flight(int counter, flight_t flights[]) { int s; int i; s = 1; printf("Enter flight code> "); scanf("%s", flights[counter].flightcode); while(s == 1){

s = 0;

if(strlen(flights[size].flightcode) < 3 || strlen(flights[size].flightcode) >6 ){

printf("Invalid Input ");

s= 1;

}

else if((flights[size].flightcode[0]<'A') || (flights[size].flightcode[0]>'Z'))

{

printf("Invalid Input ");

s=1;

}

else if((flights[size].flightcode[1]<'A') || (flights[size].flightcode[1]>'Z'))

{

printf("Invalid Input ");

s=1;

}

if(s==0){

for(i = 2; i < strlen(flights[size].flightcode); i++){

if((flights[size].flightcode[i]<'0') || (flights[size].flightcode[i]>'9'))

{

printf("Invalid Input ");

s = 1;

break;

}

}

}

if(s==1){

printf("Enter flight code> ");

scanf("%6s", flights[size].flightcode);

}

if(s==0)

break;

} printf("Enter departure info for the flight leaving SYD. "); do { printf("Enter month, date, hour and minute separated by spaces> "); scanf("%d %d %d %d", &flights[counter].departure_t.month, &flights[counter].departure_t.day, &flights[counter].departure_t.hour, &flights[counter].departure_t.minute); if (12>flights[counter].departure_t.month|| flights[counter].departure_t.month>=0 || 31=0 || 24>=flights[counter].departure_t.hour || flights[counter].departure_t.hour>0 || 60>=flights[counter].departure_t.minute || flights[counter].departure_t.minute>0) { printf("Invalid input "); } } while (12 "); scanf("%s", flights[counter].arrival_city); printf("Enter arrival info. "); do { printf("Enter month, date, hour and minute separated by spaces> "); scanf("%d %d %d %d", &flights[counter].arrival_t.month, &flights[counter].arrival_t.day, &flights[counter].arrival_t.hour, &flights[counter].arrival_t.minute); if (12

/* Checks for existance of a flight in the program */

int check_flight(int counter, flight_t flights[], char second_choice[MAX_FLIGHTCODE_LEN+1]) { int second_counter; int incrementer=0; for (second_counter=0; second_counter<1; second_counter++) { if (strncmp(second_choice, flights[second_counter].arrival_city,4)==0) { incrementer++; } } return incrementer; }

1- I am only allow to use when I make wrong input (letter or number) in the first menu it crash so I want it only to accpet numbers between 1-5 so the input to be limited (no action shows if the user try to enters a letter for example).

2-For the add flight in Enter date and time it crash too (wrong number or letter) so if the user enter a wrong choice I want a messge with "Invalid input" shows up for both time and date - departure and arrival

Can you fix it pls?