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‎.gitignore

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node_modules
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node_modules
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__MACOSX

‎Computed_Shopping_Assistant/Computed_Shopping_Assistant.zip

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‎Computed_Shopping_Assistant/main.c

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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include "shopping_cart.h"
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extern struct shopping_cart shopping_cart;
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extern char user_input[];
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extern bool loaded_coupons;
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void add_item_menu() {
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printf("Which item would you like to add?\n");
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printf("%c - Bread\n", TYPE_BREAD);
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printf("%c - Pasta\n", TYPE_PASTA);
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printf("%c - Soup\n", TYPE_SOUP);
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printf("%c - Drink\n", TYPE_DRINK);
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printf("%c - Vegetable\n", TYPE_VEGETABLE);
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printf("%c - Fruit\n", TYPE_FRUIT);
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char choice_type;
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scanf(" %c", &choice_type);
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if (!is_valid_food_type(choice_type)) {
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printf("Invalid type entered!\n");
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return;
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}
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item* item = add_item(choice_type);
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switch (choice_type) {
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case TYPE_BREAD:
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strcpy(item->grocery_item.description, "White bread");
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item->grocery_item.amount_loaves = 1;
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break;
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case TYPE_PASTA:
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strcpy(item->grocery_item.description, "Spaghetti");
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item->grocery_item.amount_kilograms = 1;
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break;
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case TYPE_SOUP:
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strcpy(item->grocery_item.description, "Lentil soup");
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item->grocery_item.amount_liters = 1;
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break;
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case TYPE_DRINK:
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strcpy(item->grocery_item.description, "Coca-Cola");
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item->grocery_item.amount_liters = 1;
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break;
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case TYPE_VEGETABLE:
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strcpy(item->grocery_item.description, "Potatoes");
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item->grocery_item.amount_kilograms = 1;
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break;
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case TYPE_FRUIT:
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strcpy(item->grocery_item.description, "Apples");
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item->grocery_item.amount_items = 1;
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break;
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}
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printf("1 %s of %s added!\n", food_type_to_unit(choice_type), item->grocery_item.description);
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}
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void edit_item_menu() {
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if (shopping_cart.amount_of_items == 0) {
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printf("Your shopping cart is empty!\n");
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return;
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}
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printf("Which item index would you like to edit?\n");
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int choice;
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scanf("%d", &choice);
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if (choice < 0 || choice >= SHOPPING_CART_SIZE) {
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printf("Invalid item index!\n");
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return;
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}
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item* item = &shopping_cart.items[choice];
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if (!can_edit_item(item)) {
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printf("Can not edit this item!\n");
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return;
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}
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printf("Which property would you like to edit?\n"
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"1 - Type\n"
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"2 - Amount of kilograms\n"
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"3 - Amount of items\n"
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"4 - Amount of loaves\n"
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"5 - Amount of liters\n"
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"6 - Description\n"
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"7 - Cancel\n");
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scanf("%d", &choice);
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if (choice < 1 || choice > 7) {
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printf("Invalid choice!\n");
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return;
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}
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char newline;
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scanf("%c", &newline); // clear newline from buffer
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char choice_type;
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switch (choice) {
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case 1:
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printf("Enter new type: ");
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fflush(stdout);
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scanf(" %c", &choice_type);
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if (choice_type == TYPE_COUPON) {
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printf("You can not convert to coupon!\n");
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} else if (is_valid_food_type(choice_type)) {
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item->type = choice_type;
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} else {
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printf("Invalid type entered!\n");
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}
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break;
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case 2:
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printf("Enter new kilograms amount: ");
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fflush(stdout);
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scanf("%d", &choice);
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item->grocery_item.amount_kilograms = choice;
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break;
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case 3:
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printf("Enter new items amount: ");
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fflush(stdout);
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scanf("%d", &choice);
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item->grocery_item.amount_items = choice;
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break;
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case 4:
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printf("Enter new loaves amount: ");
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fflush(stdout);
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scanf("%d", &choice);
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item->grocery_item.amount_loaves = choice;
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break;
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case 5:
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printf("Enter new liters amount: ");
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fflush(stdout);
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scanf("%d", &choice);
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item->grocery_item.amount_liters = choice;
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break;
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case 6:
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printf("Enter new description: ");
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fflush(stdout);
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fgets(item->grocery_item.description, STRING_BUFFER_SIZE, stdin);
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item->grocery_item.description[strlen(item->grocery_item.description)-1] = '\0'; // remove newline
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break;
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case 7:
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return;
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break;
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}
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printf("Item updated!\n");
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}
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void remove_item_menu() {
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if (shopping_cart.amount_of_items == 0) {
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printf("Your shopping cart is empty!\n");
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return;
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}
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printf("Which item index would you like to remove?\n");
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int choice;
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scanf("%d", &choice);
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if (choice < 0 || choice >= SHOPPING_CART_SIZE) {
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printf("Invalid item index!\n");
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return;
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}
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remove_item(choice);
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}
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void print_shopping_cart() {
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if (shopping_cart.amount_of_items == 0) {
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printf("\nYour shopping cart is empty!\n");
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return;
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}
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printf("\nYour shopping cart has %d items:\n", shopping_cart.amount_of_items);
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for (int i = 0; i < SHOPPING_CART_SIZE; i++) {
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item* item = &shopping_cart.items[i];
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int amount = 0;
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switch (item->type) {
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case TYPE_UNDEFINED:
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break;
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case TYPE_COUPON:
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if (item->coupon.have_entered) {
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printf("(index %d) - %d%% OFF coupon - %s\n", i, item->coupon.discount_amount, item->coupon.code);
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}
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break;
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default:
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switch (item->type) {
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case TYPE_BREAD:
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amount = item->grocery_item.amount_loaves;
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break;
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case TYPE_PASTA:
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case TYPE_VEGETABLE:
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amount = item->grocery_item.amount_kilograms;
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break;
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case TYPE_SOUP:
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case TYPE_DRINK:
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amount = item->grocery_item.amount_liters;
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break;
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case TYPE_FRUIT:
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amount = item->grocery_item.amount_items;
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}
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printf("(index %d) - %d %s of %s\n", i, amount, food_type_to_unit(item->type), item->grocery_item.description);
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break;
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}
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}
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}
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void apply_a_coupon() {
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if (!loaded_coupons) {
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load_coupon("coupon_10.txt", 10);
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load_coupon("coupon_50.txt", 50);
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loaded_coupons = true;
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}
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printf("Please enter your coupon:\n");
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char newline;
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scanf("%c", &newline); // clear newline from buffer
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fgets(user_input, STRING_BUFFER_SIZE, stdin);
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for (int i = 0; i < SHOPPING_CART_SIZE; i++) {
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item* item = &shopping_cart.items[i];
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if (item->type == TYPE_COUPON && !item->coupon.have_entered) {
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if (!memcmp(item->coupon.code, user_input, item->coupon.length)) {
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printf("Applied coupon for %d%% OFF!\n", item->coupon.discount_amount);
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item->coupon.have_entered = true;
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return;
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}
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}
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}
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printf("Invalid coupon!\n");
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}
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void checkout() {
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printf("\nThank you for choosing Computed Shopping Assistant!\n");
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printf("Your items will be delivered to you within 24 hours.\n");
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printf("Goodbye!\n");
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exit(0);
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}
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void main_menu() {
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printf("\n---> Welcome to Computed Shopping Assistant <---\n");
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while (true) {
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printf("\nWhat would you like to do?\n"
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"1 - Add item to shopping cart\n"
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"2 - Edit item in shopping cart\n"
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"3 - Remove item from shopping cart\n"
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"4 - View shopping cart\n"
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"5 - Apply a coupon\n"
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"6 - Checkout\n");
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int choice = 0;
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scanf("%d", &choice);
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switch (choice) {
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case 1:
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add_item_menu();
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break;
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case 2:
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edit_item_menu();
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break;
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case 3:
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remove_item_menu();
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break;
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case 4:
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print_shopping_cart();
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break;
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case 5:
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apply_a_coupon();
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break;
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case 6:
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checkout();
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break;
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default:
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printf("Invalid choice!\n");
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exit(0);
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break;
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}
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}
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}
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int main() {
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memset(&shopping_cart, 0, sizeof(shopping_cart));
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main_menu();
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}

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