Linked List
Hi CEans,
There is my coding in C for insertion of a new node at desired location(using call by reference method). During compilation the program succeed, but its not showing any output. If you have any idea please correct me.
There is my coding in C for insertion of a new node at desired location(using call by reference method). During compilation the program succeed, but its not showing any output. If you have any idea please correct me.
#include#include struct student { int data; struct student *next; }; void insert_pos(struct student **); void main() { struct student *head; head=create(); traverse(head); insert_pos(&head); traverse(head); getch(); } void insert_pos(struct student **head) { struct student *ptr, *loc=NULL,*n; ptr=*head; n=(struct student *)malloc(sizeof(struct student *)); printf("Enter value"); scanf("%d",&n->data); n->next=NULL printf("Enter value where u want to insert"); scanf("%d",&item); while(ptr!=NULL) { if(item==ptr->data) { loc=ptr; break; } ptr=ptr->next; } if(loc==NULL) ptr=n; else { n->next=ptr->next; loc->next=n; } } struct student *create() { struct student *head=NULL,*ptr; char choice='y'; while(choice='='||choice=='Y') { if(head==NULL) { head=(struct student *)malloc(sizeof(struct student *)); ptr=head; } else { ptr->next=(struct student *)malloc(sizeof(struct student *)); ptr=ptr->next; } ptr->next=NULL; printf("Enter ur data"); scanf("%d",&ptr->data); printf("Do u want 2 create another node"); scanf("%c",&choice); } return(head); } void traverse(struct student *ptr) { while(ptr!NULL) { printf("%d",ptr->data); ptr=ptr->next; } }
Replies
-
Manish GoyalYour program is working perfectly in my pc now
but i wanna know how can you say that iit compiles successfully there are so many errors in your program and the worst part all are basic
Check your program thoroughly again
For your easiness I will tell you one error
Statement missing ;
Try it if not able to solve it ,then i will help you 😀 -
LeoGoayl, In fact i think this is the worst kind of programming practice i have ever seen. No comments, unnecessary heavy use of pointers, invalid use of void and return and last but not least no checking of allocated memory after using malloc function. The program is really very easy create, insert and transverse linked list and i don't think he may have needed any help if he had practiced programming a little bit.
-
3011Ya there were some errors during typing, but it's not working.
#include
#include
struct student
{
int data;
struct student *next;
};
void insert_pos(struct student **);
void main()
{
struct student *head;
head=create();
traverse(head);
insert_pos(&head);
traverse(head);
getch();
}
void insert_pos(struct student **head)
{
struct student *ptr, *loc=NULL,*n;
ptr=*head;
n=(struct student *)malloc(sizeof(struct student *));
printf("Enter value");
scanf("%d",&n->data);
n->next=NULL;
printf("Enter value where u want to insert");
scanf("%d",&item);
while(ptr!=NULL)
{
if(item==ptr->data)
{
loc=ptr;
break;
}
ptr=ptr->next;
}
if(loc==NULL)
ptr=n;
else
{
n->next=ptr->next;
loc->next=n;
}
}
struct student *create()
{
struct student *head=NULL,*ptr;
char choice='y';
while(choice=='y'||choice=='Y')
{
if(head==NULL)
{
head=(struct student *)malloc(sizeof(struct student *));
ptr=head;
}
else
{
ptr->next=(struct student *)malloc(sizeof(struct student *));
ptr=ptr->next;
}
ptr->next=NULL;
printf("Enter ur data");
scanf("%d",&ptr->data);
printf("Do u want 2 create another node");
scanf("%c",&choice);
}
return(head);
}
void traverse(struct student *ptr)
{
while(ptr!NULL)
{
printf("%d",ptr->data);
ptr=ptr->next;
}
} -
Manish GoyalStill there is error
you are using item variable but i wanna know where it is declared
sorry to say but it seems that you have just copy paste the code from some place
i am again saying check your program thoroughly again
You are reading an archived discussion.
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