By | 29.11.2016

# Find Length of Linked List using Recursion

Write a C Program Find Length of Linked List using Recursion. Here’s simple Program Find Length of Linked List using Recursion in C Programming Language.

## Recursion : :

• Recursion is the process of repeating items in a self-similar way. In programming languages, if a program allows you to call a function inside the same function, then it is called a recursive call of the function.
• The C programming language supports recursion, i.e., a function to call itself. But while using recursion, programmers need to be careful to define an exit condition from the function, otherwise it will go into an infinite loop.
• Recursive functions are very useful to solve many mathematical problems, such as calculating the factorial of a number, generating Fibonacci series, etc.

## Problem : :

This C Program uses recursive function & counts the number of nodes in a linked list. A linked list is an ordered set of data elements, each containing a link to its successor.

Here is the source code of the C Program Find Length of Linked List using Recursion. The C Program is successfully compiled and run on a Linux system. The program output is also shown below.

### SOURCE CODE : :

```/*  C Program Find Length of Linked List using Recursion  */

#include <stdio.h>
#include <stdlib.h>

struct node
{
int a;
struct node *next;
};

void generate(struct node **,int size);
int length(struct node*);
void delete(struct node **);

int main()
{
int count,size;

printf("Enter size  of List u want to Generate :: ");
scanf("%d",&size);

printf("\nThe number of nodes are : %d \n", count);
return 0;
}

{
/* for unknown number of nodes use size = rand() % 20; */
int i;
struct node *temp;

for (i = 0; i < size; i++)
{
temp = (struct node *)malloc(sizeof(struct node));
temp->a = i;
{
}
else
{
}
}
}

{
printf("\nThe Generated List is :: \n\n");
{
{
}
else
{
}
}

printf("\n");
}

{
{
return 1;
}
}

{
struct node *temp;
{
free(temp);
}
}```

### Output : :

```/*  C Program Find Length of Linked List using Recursion  */

Enter size  of List u want to Generate :: 10

The Generated List is ::

9--> 8--> 7--> 6--> 5--> 4--> 3--> 2--> 1--> 0

The number of nodes are : 10

Process returned 0```

Above is the source code for C Program Find Length of Linked List using Recursion which is successfully compiled and run on Windows System.The Output of the program is shown above .

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