en-queue linklist in c

batman4 · 07-19-2012, 05:08 AM

pls help i want to insert data from structure into link-list at rear and delete it fro front in c language..

pan64 · 07-19-2012, 05:53 AM

do you have some code about handling linked lists? (to start with)

batman4 · 07-19-2012, 06:20 AM

Quote:

Originally Posted by pan64

do you have some code about handling linked lists? (to start with)

Code:

struct query{
char data[20];
struct query *next;
};


struct query *head;
struct query *tail;

struct  query *temp=NULL;
if(!temp)
 {malloc
temp->next =NULL;
HEAD =TEMP
TAIL =TEMP;
}
else

now this is confusing me
how to insert a node at rear end
while temp->next !=NULL {
temp=temp->next;
here

NevemTeve · 07-19-2012, 06:34 AM

to-end:

Code:

newelement->next= NULL;
if (!head) {
    head= newelement;
} else {
    tail->next= newelement;
}
tail= newelement;

to-start:

Code:

newelement->next= head;
if (!head) {
    tail= newelement;
}
head= newelement;

crabboy · 07-20-2012, 11:53 AM

Please follow this discussion here:
http://www.linuxquestions.org/questi...ic-4175417526/