Write a user defined function named as “length_list” function that finds the length of a list  of list_node_t nodes. This code should fit with the following code. Partial Code:  #include   #include /* gives access to malloc */  #define SENT -1  typedef struct list_node_s {  int digit;  struct list_node_s *restp;  } list_node_t;  list_node_t *get_list(void);  int  main(void)  {  list_node_t *x; int y;  x=get_list();  printf("%d\n",x->digit);  printf("%d\n",x->restp->digit);  printf("%d\n",x->restp->restp->digit);  // your length_list function should be called from here  printf("Length is: %d",y);  }  /*  * Forms a linked list of an input list of integers  * terminated by SENT  */  list_node_t *  get_list(void)  {  int data;  list_node_t *ansp;  [20] scanf("%d", &data);  if (data == SENT) {  ansp = NULL;  } else {  ansp = (list_node_t *)malloc(sizeof (list_node_t));  ansp->digit = data;  ansp->restp = get_list();  }  return (ansp);

C++ for Engineers and Scientists
4th Edition
ISBN:9781133187844
Author:Bronson, Gary J.
Publisher:Bronson, Gary J.
Chapter7: Arrays
Section7.5: Case Studies
Problem 3E
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Write a user defined function named as “length_list” function that finds the length of a list 
of list_node_t nodes. This code should fit with the following code.
Partial Code: 
#include <stdio.h> 
#include <stdlib.h> /* gives access to malloc */ 
#define SENT -1 
typedef struct list_node_s { 
int digit; 
struct list_node_s *restp; 
} list_node_t; 
list_node_t *get_list(void); 
int 
main(void) 

list_node_t *x;
int y; 
x=get_list(); 
printf("%d\n",x->digit); 
printf("%d\n",x->restp->digit); 
printf("%d\n",x->restp->restp->digit); 
// your length_list function should be called from here 
printf("Length is: %d",y); 

/* 
* Forms a linked list of an input list of integers 
* terminated by SENT 
*/ 
list_node_t * 
get_list(void) 

int data; 
list_node_t *ansp; 
[20]
scanf("%d", &data); 
if (data == SENT) { 
ansp = NULL; 
} else { 
ansp = (list_node_t *)malloc(sizeof (list_node_t)); 
ansp->digit = data; 
ansp->restp = get_list(); 

return (ansp); 

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ISBN:
9781133187844
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Course Technology Ptr