20CYS113-20CYS181-Computer-Programming-and-Lab
20CYS113 - Computer-Programming and 20CYS181 - Computer Programming Lab
/*
* Amrita Vishwa Vidyapeetham
* TIFAC-CORE in Cyber Security
* 20CYS181 - Computer Programming Lab Project
* Movie Ticketing system
* Authors: Charan K, Midhrujayan K, R M Naren Adithya, Ramraj S
* Created Date: 28-June-2023
* Updated Date: 27-July-2023
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
struct MovieDetails{
char name[100];
int code;
char strCode[8];
}movie[5];
void display(FILE *file)
{
char ch;
while ((ch = fgetc(file)) != EOF)
{
if (ch!=';')
printf("%c", ch);
else
printf(" ");
}
}
void bookTicket(int cd)
{
char mov[100]={0};
for (int i=0; i<5; i++)
{
if (movie[i].code == cd)
{
strncpy(mov, movie[i].strCode,8);
}
}
FILE *fp, *booking;
int number,i,n;
char line[27];
char line2[20];
char booking_id[7];
printf("The file opened is %s\n",mov);
// Open the file in read mode
fp = fopen(mov, "r+");
if (fp == NULL) {
printf("No such movie exists\n");
}
else{
display(fp);
// you should move the cursor back to starting
rewind(fp);
// Get the two digit number from the user
printf("Enter number of tickets you would like to book\n");
scanf("%d", &n);
int seats[n];
printf("Enter the seats you would like to book: ");
for (int k=0; k<n; k++)
{
scanf("%d", &seats[k]);
}
for (int k=0; k<n; k++)
{
while (seats[k]==00 || seats[k]==10 || seats[k]==20 || seats[k]==30 || seats[k]<0 || seats[k]>40)
{
printf("\nPlease enter a valid seat number instead of %d\n", seats[k]);
scanf("%d", &seats[k]);
}
}
char movie[4];
strncpy(movie, mov, 4);
char abc[20], chek [20];
// Loop through each line in the file
while (fgets(line, 27, fp)) {
// Check if the two digit number is in the line
for (i = 0; i < 27; i++) {
for (int k=0; k<n; k++){
if (line[i] == seats[k] / 10 + '0' && line[i + 1] == seats[k] % 10 + '0') {
booking = fopen("booking.txt", "r+");
if (booking == NULL)
{
printf("No such movie exists\n");
}
booking_id[0]=(seats[k]/10 +'0');
booking_id[1]=(seats[k]%10 +'0');
booking_id[2]= cd/1000+'0';
booking_id[3]= (cd%1000)/100+'0';
booking_id[4]= (cd%1000)/10+'0';
booking_id[5]= cd%10+'0';
booking_id[6]= '\n';
char id[7];
strncpy(id, booking_id, 7);
while (fgets(line2, 13, booking))
{
for (int i=0; i<13; i++)
{
chek[i]='\0';
}
strcat(chek,"BOOKING_");
strcat(chek,mov);
for (int i=12; i<16; i++)
{
chek[i]='\0';
}
strcat(chek,":\n");
//line 2 and chek are the same and yet strncmp returns false
if (strncmp(chek,line2,13)==0)
{
printf("\nsuccess\n");
fputs(id, booking);
}
printf("%s", line2);
}
printf("\n%s", chek);
fclose(booking);
// Replace the number with XX
line[i] = 'X';
line[i + 1] = 'X';
// Write the line back to the file
fseek(fp, -26, SEEK_CUR);
fputs(line, fp);
}
}
}
}
// Close the file
fclose(fp);
}
}
void cancelTicket(char booking_id[], int cd)
{
FILE *fp = fopen("booking.txt", "r+");
char mov[100]={0};
for (int i=0; i<5; i++)
{
if (movie[i].code == cd)
{
strncpy(mov, movie[i].strCode,8);
}
}
FILE *fp2;
// Open the file in read mode
fp2 = fopen(mov, "r+");
char line[30], line2[30];
char *seat, *b_id;
char snum[2];
while(fgets(line, 30, fp))
{
snum[0]=0;
snum[1]=0;
fgets(line2, 30, fp2);
seat = strtok(line, ":");
b_id = strtok(NULL, ":");
if (strcmp(b_id, booking_id)==0)
{
for (int i=4; i<10; i++)
{
line[i]='\0';
}
fseek(fp, -6, SEEK_CUR);
fputs(line, fp);
}
snum[0] = *seat;
snum[1] = *++seat;
for (int i = 0; i < 26; i++) {
if (snum[1]<'9')
{
if (line[i] == 'X' && line[i + 1] == 'X' && line[i+3]==snum[0]+1 && line[i+4]==snum[1]+1) {
{ line[i] = 0;
line[i + 1] = snum[1];
}}
else if(i>=23)
{
if (line[i] == 'X' && line[i + 1] == 'X' && line[i-3]==snum[0]-1 && line[i-2]==snum[1]-1)
{line[i] = 0;
line[i + 1] = snum[1];}
}
fseek(fp, -26, SEEK_CUR);
fputs(line, fp);
}
fclose(fp);
fclose(fp2);
printf("ticket cancelled");
}
}
}
void listMovies()
{
printf("Screening now:\n");
for( int i = 0; i<5; i++)
{
printf("%s: %d\n", movie[i].name, movie[i].code);
}
}
int main()
{
strncpy(movie[0].name, "The Legend", strlen("The Legend"));
movie[0].code = 1000;
strncpy(movie[0].strCode, "1000.txt",8);
strncpy(movie[1].name, "Veera Simha Reddy", strlen("Veera Simha Reddy"));
movie[1].code = 1001;
strncpy(movie[1].strCode, "1001.txt",8);
strncpy(movie[2].name, "Vivegam", strlen("Vivegam"));
movie[2].code = 1002;
strncpy(movie[2].strCode, "1002.txt",8);
strncpy(movie[3].name, "Varisu", strlen("Varisu"));
movie[3].code = 1003;
strncpy(movie[3].strCode, "1003.txt",8);
strncpy(movie[4].name, "Adipurush", strlen("Adipurush"));
movie[4].code = 1004;
strncpy(movie[4].strCode, "1004.txt",8);
int option;
printf("Welcome to BookYourShow.\n");
do{
printf("Please choose what you would like to do.\n");
printf("1. Book Tickets.\n");
printf("2. Cancel Tickets.\n");
printf("3. View list of movies.\n");
printf("4. Exit BookYourShow.\n");
scanf("%d", &option);
switch (option)
{
case 1:
listMovies();
int movcode;
printf("Choose movie that you would like to watch using movie code(4-digit number after :)\n");
scanf("%d", &movcode);
while (movcode<1000 || movcode>1005)
{
printf("Invalid movie code, please re-enter a valid movie code.\n");
scanf("%d", &movcode);
}
bookTicket(movcode);
break;
case 2:
char bookid[6];
int code;
cancelTicket(bookid, code);
break;
case 3:
listMovies();
break;
case 4:
printf("Thank you for visiting us!");
break;
default:
printf("Invalid Option, please select a option from 1 to 4.");
break;
}
}while (option!=4);
return 0;
}