/*********************************************************
* From C PROGRAMMING: A MODERN APPROACH, Second Edition *
* By K. N. King *
* Copyright (c) 2008, 1996 W. W. Norton & Company, Inc. *
* All rights reserved. *
* This program may be freely distributed for class use, *
* provided that this copyright notice is retained. *
*********************************************************/

/* inventory2.c (Chapter 17, page 434) */
/* Maintains a parts database (linked list version) */

#include
#include
#include “readline.h”

#define NAME_LEN 25

struct part {
int number;
char name[NAME_LEN+1];
int on_hand;
struct part *next;
};

struct part *inventory = NULL; /* points to first part */

struct part *find_part(int number);
void insert(void);
void search(void);
void update(void);
void print(void);

/**********************************************************
* main: Prompts the user to enter an operation code, *
* then calls a function to perform the requested *
* action. Repeats until the user enters the *
* command ‘q’. Prints an error message if the user *
* enters an illegal code. *
**********************************************************/
int main(void)
{
char code;

for (;;) {
printf(“Enter operation code: “);
scanf(” %c”, &code);
while (getchar() != ‘n’) /* skips to end of line */
;
switch (code) {
case ‘i’: insert();
break;
case ‘s’: search();
break;
case ‘u’: update();
break;
case ‘p’: print();
break;
case ‘q’: return 0;
default: printf(“Illegal coden”);
}
printf(“n”);
}
}

/**********************************************************
* find_part: Looks up a part number in the…