Question

Write a function to insert a name at the end of a linked list? (C)

I have a linked list:

struct node {
    char person[100];
    struct node *next;
};

int main() {
    struct node *new_node;
    new_node=malloc(sizeof(struct node));
    
    printf("Please enter a name:\n");
    scanf("%s", );
    
}

How do I get the name from the user and write a function to add it to the end of the linked list? I'm not supposed to use the insert() library function, which is why I'm having trouble.

Answer 1

#include<stdio.h>
#include<stdlib.h>

// creating a structure
struct node
{
   char person[100];
   struct node *next;
} node;

struct node *add_data(struct node *head ,struct node *new)
{
   struct node *temp;
   new->next=NULL;
      
   // if no nodes are there
   if(head==NULL)
   head=new;
  
   else
   {
       // traverse the list till the end
       temp=head;
       while(temp->next!=NULL)
       temp=temp->next;
      
       // adding list to the queue
       temp->next=new;  
   }
   return head;
}
void display(struct node *head)
{
   if(head==NULL)
   printf("\nNo Elements List is empty");
   else
   printf("The data is\n");
   while(head!=NULL)
   {
       printf("%s\t",head->person);
       head=head->next;
   }
}
int main()
{
   struct node *new_node,*head;
new_node=malloc(sizeof(struct node));
printf("Please enter a name:\n");
scanf("%s",&new_node->person );
   head=add_data(head,new_node);
   display(head);
   return 0;
}

Please enter a name: hegg The data is Chegg