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Oct 26, 2024
Oct 26, 2024
1.3K
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<stdio.h>
#include<conio.h>
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;
}
}
