mark out correction for the question(insertion at tail in linked list)

OUTPUT segmentation fault

C code

Code:

#include<stdio.h>
#define OK 1
#define ERROR 0
typedef struct node{
  int data;
  struct node *next;
}node,*list;
int insertionattail(list l,int data)  {
  list t,temp;
  temp=l;
  t=(list)malloc(sizeof(node));
  if(t==NULL)return ERROR;
  t->data=data;
  while(l->next)  {
    l->next=l->next->next;
  }
  t->next=NULL;
  l->next=t;
  l=temp;
  return OK;
}
int main()  {
  node n;
  list l;
  l=&n;
  n.next=NULL;
  insertionattail(l,5);
  insertionattail(l,7);
  printf("data1=%d,data2=%d",l->next->next->data,l->next->next->next->data);
  return 0;
}

 

Check out http://www.go4expert.com/forums/showthread.php?t=1278

 

This is what you get when you explicitly cast pointer returned by malloc. To call this function an appropriate header needs to be included - <stdlib.h>. Without the explicit cast the complier would display a warning.