This shouldn\'t be too hard but I find myself on limited time. Just be sure to i
ID: 3536109 • Letter: T
Question
This shouldn't be too hard but I find myself on limited time. Just be sure to indicate where one file begins and ends, and remember to remove all external/global variables.
#include <stdio.h>
#include <stdlib.h>
#include "readline.h"
#define NAME_LEN 25
#define INITIAL_PARTS 10
struct part {
int number;
char name[NAME_LEN+1];
int on_hand;
};
struct part *inventory;
int num_parts = 0; /* number of parts currently stored */
int max_parts = INITIAL_PARTS; /* size of inventory array */
int 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;
inventory = malloc(max_parts * sizeof(struct part));
if (inventory == NULL) {
printf("Can't allocate initial inventory space. ");
exit(EXIT_FAILURE);
}
for (;;) {
printf("Enter operation code: ");
scanf(" %c", &code);
while (getchar() != ' ') /* 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 code ");
}
printf(" ");
}
}
/**********************************************************
* find_part: Looks up a part number in the inventory *
* array. Returns the array index if the part *
* number is found; otherwise, returns -1. *
**********************************************************/
int find_part(int number)
{
int i;
for (i = 0; i < num_parts; i++)
if (inventory[i].number == number)
return i;
return -1;
}
/**********************************************************
* insert: Prompts the user for information about a new *
* part and then inserts the part into the *
* database. Prints an error message and returns *
* prematurely if the part already exists or the *
* database is full. *
**********************************************************/
void insert(void)
{
int part_number;
struct part *temp;
if (num_parts == max_parts) {
max_parts *= 2;
temp = realloc(inventory, max_parts * sizeof(struct part));
if (temp == NULL) {
printf("Insufficient memory; can't add more parts. ");
return;
}
inventory = temp;
}
printf("Enter part number: ");
scanf("%d", &part_number);
if (find_part(part_number) >= 0) {
printf("Part already exists. ");
return;
}
inventory[num_parts].number = part_number;
printf("Enter part name: ");
read_line(inventory[num_parts].name, NAME_LEN);
printf("Enter quantity on hand: ");
scanf("%d", &inventory[num_parts].on_hand);
num_parts++;
}
/**********************************************************
* search: Prompts the user to enter a part number, then *
* looks up the part in the database. If the part *
* exists, prints the name and quantity on hand; *
* if not, prints an error message. *
**********************************************************/
void search(void)
{
int i, number;
printf("Enter part number: ");
scanf("%d", &number);
i = find_part(number);
if (i >= 0) {
printf("Part name: %s ", inventory[i].name);
printf("Quantity on hand: %d ", inventory[i].on_hand);
} else
printf("Part not found. ");
}
/**********************************************************
* update: Prompts the user to enter a part number. *
* Prints an error message if the part doesn't *
* exist; otherwise, prompts the user to enter *
* change in quantity on hand and updates the *
* database. *
**********************************************************/
void update(void)
{
int i, number, change;
printf("Enter part number: ");
scanf("%d", &number);
i = find_part(number);
if (i >= 0) {
printf("Enter change in quantity on hand: ");
scanf("%d", &change);
inventory[i].on_hand += change;
} else
printf("Part not found. ");
}
/**********************************************************
* print: Prints a listing of all parts in the database, *
* showing the part number, part name, and *
* quantity on hand. Parts are printed in the *
* order in which they were entered into the *
* database. *
**********************************************************/
void print(void)
{
int i;
printf("Part Number Part Name "
"Quantity on Hand ");
for (i = 0; i < num_parts; i++)
printf("} %-25sd ", inventory[i].number,
inventory[i].name, inventory[i].on_hand);
}
Explanation / Answer
in the above program you have used a header file "readline.h" , so post the content of this header file,and after that i can able to edit the above program according to your requirenment
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.