Question

This is my C language code. I have some problems with the linked list. I can't store the current. After current = temp, I don't know how to move to the next node. current = current-> next keeps making current into NULL.

#include

#include

#include

#include

struct node{int data; struct node *next;};

int main()

{

    struct node *head, *current, *temp, *trash;

    srand(time(0));

    int randNumber = rand()%51;

    if(randNumber != 49)

    {

        temp = (struct node*)malloc(sizeof(struct node));

        current = (struct node*)malloc(sizeof(struct node));

        temp->data = randNumber;

        temp->next = NULL;

        head = temp;

        head->next = current = NULL;

        randNumber = rand()%51;

        while(randNumber != 49)

        {

            temp = (struct node*)malloc(sizeof(struct node));

            temp->data = randNumber;

            temp->next = NULL;

            current= temp;

            current = current->next;

            randNumber = rand()%51;

        }

        temp = head;

        printf("%d", temp->data);

        printf("%d", temp->next->data);

        while (temp != NULL)

        {

            printf("%d\n", temp->data);

            trash = temp;

            temp = temp->next;

            free(trash);

        }

        

        

        

    }

    

    printf("EXIT\n");

    return 0;

}

Answer 1

Please find the answer below.
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#include <stdio.h>
#include <stdlib.h>
struct node{int data; struct node *next;};

int main()

{

   struct node *head, *current, *temp, *trash;

   srand(time(0));

   int randNumber = rand()%51;

   if(randNumber != 49)

   {
       temp = (struct node*)malloc(sizeof(struct node));

       temp->data = randNumber;

       temp->next = NULL;

       head = temp;

       head->next = NULL;

       current = head;

       randNumber = rand()%51;

       while(randNumber != 49)

       {
           temp = (struct node*)malloc(sizeof(struct node));

           temp->data = randNumber;

           temp->next = NULL;

           current->next= temp;

           current = temp;

           randNumber = rand()%51;
       }

       temp = head;

       while (temp != NULL)

       {

           printf("%d\n", temp->data);

           trash = temp;

           temp = temp->next;

           free(trash);

       }

   }

   printf("EXIT\n");

   return 0;
}