how to display reserved cinema seats again in c programming - c

Question

The following is the code I made for a seat reservation at the cinema. the problem is when I display seats again after reservation it's not displaying the reserved seats.
p.s: I can see the message "seat is already reserved but it is not displaying on the screen.
0=empty seats.
1=reserved seats.
THIS IS CODING:
#include <stdio.h>
void DisplaySeats(void);
void ReserveSeats(void);
void ChooseSeat(void);
int Seats[4][10];
int main()
{
printf("Welcome to our small Cinema!!!\n");
printf("\n");
DisplaySeats();
ReserveSeats();
printf("Thankyou for Choosing our small Cinema !! \n");
getch();
}
void ChooseSeat(void)
{
int row, col,k;
printf("Which row do you want to choose? : ");
scanf_s("%d", &row);
printf("Which seat do you want to select? : ");
scanf_s("%d", &col);
if (row > 4 || col > 10)
{
printf("Wrong Entry !! Try again\n");
ChooseSeat();
}
else if (Seats[row - 1][col - 1] != 0)
{
printf("Seat is already reserved try again !!\n");
ChooseSeat();
}
else
{
Seats[row - 1][col - 1] = 1;
printf("Congratulations!! Reservation Completed!!!\n");
DisplaySeats();
}
}
void ReserveSeats(void)
{
int NoOfSeats,i;
printf("How many seats do you want to reserve?\n");
scanf_s("%d", &NoOfSeats);
for (i = 1; i <= NoOfSeats; i++)
{
ChooseSeat();
}
}
void DisplaySeats(void)
{
int i, j;
int Seats[4][10] = { 0 };
printf("\t \t Seats\n");
printf("\t1 2 3 4 5 6 7 8 9 10\n");
for (i = 0; i < 4; i++)
{
printf("Rows %d: ", i + 1);
for (j = 0; j < 10; j++)
printf("%d ", Seats[i][j]);
printf("\n");
}
printf("\n");
}

Answer 1

The problem is in your DisplaySeats function. You have a local Seats[4][10] in your display function, which means your global variable Seats[4][10] will be hidden inside your DisplaySeats.
Every time you call DisplaySeats, you just show a brand new Seats, NOT the one you modified in your ChooseSeat function. So just get rid of int Seats[4][10] = { 0 }; in your DisplaySeats function , and you'll be fine.

Answer 2

I solved some years ago the same problem with the following idea:
each row of the cinema is a linked list and each element of the list contain an address of a new linked list for each column.
For the persistence of the information use file.txt
You can see it in my repository on github:
https://github.com/LombardoAndrea195/Sistemi_Operativi_Project/tree/master/Sistemi_Operativi_Lombardo