Question

q7.4 Fix the errors in the code (in C)

//This program is supposed to scan 5 ints from the user

//Using those 5 ints, it should construct a linked list of 5 elements

//Then it prints the elements of the list using the PrintList function

#include <stdio.h>

struct Node{

int data;

Node* next;

};

int main(void){

struct Node first = {0, 0};

struct Node* second = {0, 0};

Node third = {0, 0};

struct Node fourth = {0, 0};

struct Node fifth = {0, &first};

int i;

scanf(" %d", &i);

first.data = i;

scanf(" %d", &i);

second.data = i

first.next = &second;

scanf(" %d", &i);

third.data = i;

second.next = third;

scanf(" %d", &i);

data = i;

third.next = &fourth;

scanf(" %d", &i);

fifth.data = i;

fourth->next = &fifth;

PrintList(first);

}

PrintList(struct Node* n){

while(n != 0){

printf("%d ", n.data);

n = n.next;

}

printf("\n");

}

Answer 1

#include <stdio.h>

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

void PrintList(struct Node* n){

   while(n != NULL){
  
       printf("%d ", n->data);
      
       n = n->next;
  
   }  
}
int main(void){
  
   // list with 5 nodes
   struct Node *first = NULL;
  
   struct Node *second = NULL;
  
   struct Node *third = NULL;
  
   struct Node *fourth = NULL;
  
   struct Node *fifth = NULL;
  
// allocate 5 nodes in the heap
   first = (struct Node*)malloc(sizeof(struct Node));
second = (struct Node*)malloc(sizeof(struct Node));
third = (struct Node*)malloc(sizeof(struct Node));
   fourth = (struct Node*)malloc(sizeof(struct Node));
   fifth = (struct Node*)malloc(sizeof(struct Node));
  
   int i;
  
   scanf(" %d", &i);
  
   first->data = i; // assign data in first node
  
   scanf(" %d", &i);
  
   second->data = i;
  
   first->next = second; // Link first node with the second node
  
   scanf(" %d", &i);
  
   third->data = i;
  
   second->next = third;
  
   scanf(" %d", &i);
  
   fourth->data = i;
  
   third->next = fourth;
  
   scanf(" %d", &i);
  
   fifth->data = i;
  
   fourth->next = fifth;
  
   fifth->next = NULL; // last node assign with null
  
   printf("List is: ");
   PrintList(first);
  
}

/* PLEASE UPVOTE */

  
/* OUTPUT */