This C program defines functions to create and manipulate a singly linked list data structure. It includes functions to insert nodes, display the list, search for a value, insert after a found node, delete a node, and count the total nodes. These functions are used in main() to create a sample linked list, perform operations on it like searching and inserting, and finally display the updated list.

1. #include <stdio.h>
#include <stdlib.h>
typedef struct list{
int v;
struct list * n;
}h;
h*cr()
{
return (h*)malloc(sizeof(h));
}
void insert(h*t,int data){
while(t->n!=NULL)
{
t=t->n;
}
t->n=cr();
t->n->v=data;
t->n->n=NULL;
}
void dis(h*t)
{
while(t->n!=NULL)

2. {
printf("%d -> ",t->n->v);
t=t->n;
}
printf("NULL");
}
int search(h*t,int data)
{
int i=0;
while(t->n!=NULL)
{
i++;
if(data==t->n->v)
{
printf("nvalue found.Location= %dn",i);
return i;
}
t=t->n;
}
}
void inaf(h*t, int search, int data)
{
while(t->n != NULL)
{

3. if(t->n->v == search)
{
h *store = t->n->n;
t->n->n = cr();
t->n->n->v = data;
t->n->n->n = store;
}
t=t->n;
}
}
int del(h *t, int data)
{
while(t->n != NULL)
{
if(t->n->v == data)
{
t->n = t->n->n;
return 0;
}
t = t->n;
}
}

4. void countNode(h *t)
{
int count = 0;
while(t->n != NULL)
{
count++;
t = t->n ;
}
printf("nTotal %d nodes found.n", count);
}
int main()
{
h*f=cr();
f->n=NULL;
insert(f, 5);
insert(f, 9);
insert(f, 11);
insert(f, 9);
dis (f);c
countNode(f );

5. search(f, 9);
inaf (f, 11, 44);
del (f, 9);
dis(f);
}