Linked_list

#include <stdio.h>

//Compiler version gcc  6.3.0

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

void push(int data){
  struct node *temp = (struct node*)malloc(sizeof(struct node));
  if(temp==NULL){
    printf("overflow");
  }
  else{
    if(head == NULL){
      temp->data = data;
      temp->next = NULL;
      head = temp;
    }
    else{
      temp->data = data;
      temp->next = head;
      head = temp;
    }
    printf("Items pushed!\n");
    
  }
}

int main()
{
  struct node *head = (struct node *)malloc(sizeof(struct node));
  struct node *ptr = (struct node *)malloc(sizeof(struct node));
  head->data = 7;
  head->next = NULL;
  int value;
  scanf("%d",&value);
  push(value);
  ptr = head;
  while(ptr != NULL){
    printf("%d -> ",ptr->data);
    ptr = ptr->next;
  }
  return 0;
}