Pogram to delete the element from linked list of first position element

Pogram to delete the element from linked list of first position element.

#include<stdio.h>

#include<conio.h>

#include<alloc.h>

#define null 0

void main()

{

 char c;

 int i,p,j=0;

 struct node

 {

  int data;

  struct node *link;

 }*temp,*start,*n,*prev;

 clrscr();

 start=null;

 for(i=0;i<=1;i++)

 {

  if(start==null)

  {

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

   printf("enter data:");

   scanf("%d",&temp->data);

   temp->link=null;

   start=temp;

   j++;

  }

  else

  {

   while(1)

   {

    printf("press n if you not want to add another node");

    fflush(stdin);

    c=getch();

    if(c=='n'||c=='N')

     break;

    else

    {

     temp->link=(struct node*)malloc(sizeof(struct node));

     temp=temp->link;

     printf("\nenter data:");

     scanf("%d",&temp->data);

     temp->link=null;

     j++;

    }

   }

  }

 }

 printf("\ntraversing\n");

 temp=start;

 while(temp->link!=null)

 {

  printf("%d\t",temp->data);

  temp=temp->link;

 }

 printf("%d",temp->data);

 printf("\ndelete link first position:");

 temp=start;

 start=start->link;

 temp->link=null;

 free(temp);

 printf("\ntraversing\n");

 temp=start;

 while(temp->link!=null)

 {

  printf("%d\t",temp->data);

  temp=temp->link;

 }

 printf("%d",temp->data);

 getch();

}

output:

enter data:45

press n if you not want to add another node

enter data:85

press n if you not want to add another node

enter data:56

press n if you not want to add another node n

traversing:

45       85      56

Delete link at from first position

traversing

85           56