Swapping elements in a link list.

[access2ajay]

The code below is working fine. I m just concerned if some improvement can be made.
Below code swaps one element with its next element and position of first element is given as input.e.g. if original link list is 1 2 3 4.After Swap(2,&start) it should become: 1 3 2 4.


#include<malloc.h>
#include<stdio.h>

struct node
{
int info;
struct node *link;
};

void swap(int k, struct node **start)
{
struct node* point=*start;
struct node *temp,*temp1,*temp2;
int i;
if(k==1) //special case for first element bcoz of start.
{
temp2=point->link->link;
point->link->link=point;
*start=point->link;
point->link=temp2;
}
else
{
for(i=1;i<k-1;i++)
{
point=point->link;
if((point==NULL) || (point->link->link==NULL))
{
printf("Out of bound index");
return;
}
}

printf("Inside swap func\n");
temp1=point->link->link;
temp2=point->link->link->link;
point->link->link->link=point->link;
point->link->link=temp2;
point->link=temp1;
}
}

int main()
{
int num,k;
char a;
struct node *start=NULL,*temp,*point;
//Creating Link List
do
{
temp=(struct node *) malloc(sizeof(struct node));
if(start==NULL)
{
start=temp;
point=temp;
}
else
{
point->link=temp;
point=temp;
}
printf("enter info\n");
scanf("%d",&num);
point->info=num;
point->link=NULL;
printf("want to enter more nodes\n");
a=getch();
}while((a=='y')||(a=='Y'));

//Printing LL.
point=start;
while(point!=NULL)
{
printf("%d\t",point->info);
point=point->link;
}
getch();
printf("enter the kth element to be swapped\n");
scanf("%d",&k);
swap(k,&start);

//Printing LL after swap.
point=start;
while(point!=NULL)
{
printf("%d\t",point->info);
point=point->link;
}
}

Thanks a lot.