#include <stdio.h>
#include <process.h>
#include <stdlib.h>
typedef struct node
{
char data;
struct node *next;
}NODE;
void print_list (NODE *head);
int main()
{
FILE *fp;
NODE * temp = NULL, *list = NULL;
char ch;
if((fp= fopen("d10-5.txt", "r")) == NULL)
{
printf("file open error!");
exit(-1);
}
fscanf(fp, "%c", &ch);
while(!feof (fp))
{
temp=(NODE *) malloc(sizeof(NODE));
temp->data = ch;
temp->next = list;
list = temp;
fscanf(fp, "%c", &ch);
}
fclose(fp);
temp = list;
print_list(list);
temp= list;
while(temp != NULL)
{
//printf("%c ->", temp->data);
list = temp;
temp = temp->next;
free(list);
}
//printf(" NULL\n");
return 0;
}
void print_list (NODE *head)
{
if(head == NULL)
{
printf("NULL\n");
}
else
{
printf("%c ==> ", head->data);
print_list (head->next);
}
}
|