Problem storing in char pointer
Hello,
I'm new to C, and have been messing around with pointers. I have a program that creates a "movienode' struct that stores two ints and a char pointer (string).
When creating nodes in the program, the string are stored successfully in nodes I create. However, in my addMovie function I am apparently not storing the char correctly because upon calling printQueue I see that instead of a title I get giberish (example: �'� �)
I originally had *title instead of title[40] in addMovie, and had scanf save to &title instead of title... but printQueue would segfault. :(
If anyone could help me, I'd appreciate it. :)
Code:
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
struct movienode {
char *title;
int year;
int id;
struct movienode *next;
};
//global head
struct movienode *movie = NULL;
//define
void printQueue (struct movienode *);
int main (void) {
struct movienode *m1 = (struct movienode *) malloc(sizeof(struct movienode));
struct movienode *m2 = (struct movienode *) malloc(sizeof(struct movienode));
movie = m1;
movie->year = 1985;
movie->id = 1582;
movie->title = "Movie1";
movie->next = m2;
m2->year = 1955;
m2->title = "Movie2";
m2->id = 1583;
menu();
return 0;
}
void printQueue (struct movienode * h) {
while (h != 0)
{
printf("Movie: %s Year: %d ID: %d",h->title, h->year, h->id);
printf("\n");
h = h->next;
}
}
void addMovie (struct movienode * h)
{
struct movienode *temp = (struct movienode *) malloc(sizeof(struct movienode));
char title[32];
int year;
int id;
printf("\nEnter movie title: ");
scanf("%s", title);
printf("\nEnter movie year: ");
scanf("%d", &year);
printf("\nEnter movie id: ");
scanf("%d", &id);
temp->id = id;
temp->year = year;
temp->title = title;
temp->next = h;
movie = temp;
}
int findMovie (struct movienode * h)
{
int id;
int curid;
printf("Enter movie ID to search for: ");
scanf("%d", &id);
while (h != 0)
{
if (h->id == id)
{
printf("Movie: %s Year: %d ID: %d", h->title,h->year,h->id);
return 1;
}
else
h=h->next;
}
printf("Not found.");
return 0;
}
int delMovie (struct movienode * h)
{
int id;
printf("Enter movie ID to delete: ");
scanf("%d", &id);
if (h->id == id)
{
movie = h->next;
free(h);
return 1;
}
while (h != 0)
{
if (h->next->id == id)
{
h->next = h->next->next;
free(h->next);
return 1;
}
else
h=h->next;
}
printf("Not found");
return 0;
}
void menu(void)
{
int opt;
while (opt != 0)
{
printf("\n\nMenu\n\n\n");
printf("1. Print Movies\n");
printf("2. Add Movie\n");
printf("3. Del Movie\n");
printf("4. Search Movies\n");
printf("0. Exit");
printf("\n\nEnter option: \n");
scanf("%d", &opt);
if (opt == 1)
printQueue(movie);
else if (opt == 2)
addMovie(movie);
else if (opt == 3)
delMovie(movie);
else if (opt == 4)
findMovie(movie);
}
}
