From 451ecbaf1e8eb3dce9794e609a7e44ebed7db51f Mon Sep 17 00:00:00 2001
From: 20041679 <->
Date: Fri, 23 Jun 2023 20:44:20 +0200
Subject: [PATCH] added exam simulation
---
Simulazione esame/Makefile | 12 +++++++++
Simulazione esame/input.txt | 8 ++++++
Simulazione esame/list.c | 54 +++++++++++++++++++++++++++++++++++++
Simulazione esame/list.h | 21 +++++++++++++++
Simulazione esame/main.c | 52 +++++++++++++++++++++++++++++++++++
Simulazione esame/product.c | 45 +++++++++++++++++++++++++++++++
Simulazione esame/product.h | 22 +++++++++++++++
Simulazione esame/util.c | 10 +++++++
Simulazione esame/util.h | 10 +++++++
9 files changed, 234 insertions(+)
create mode 100644 Simulazione esame/Makefile
create mode 100644 Simulazione esame/input.txt
create mode 100644 Simulazione esame/list.c
create mode 100644 Simulazione esame/list.h
create mode 100644 Simulazione esame/main.c
create mode 100644 Simulazione esame/product.c
create mode 100644 Simulazione esame/product.h
create mode 100644 Simulazione esame/util.c
create mode 100644 Simulazione esame/util.h
diff --git a/Simulazione esame/Makefile b/Simulazione esame/Makefile
new file mode 100644
index 0000000..dd38632
--- /dev/null
+++ b/Simulazione esame/Makefile
@@ -0,0 +1,12 @@
+CC = cc
+CFLAGS = -Wall -Wextra -g
+OBJS = product.o util.o list.o main.o
+
+all: product.o util.o list.o main.o
+ $(CC) product.o util.o list.o main.o -o main
+run: all
+ ./main
+%.o: %.c
+ $(CC) -c $(CFLAGS) $< -o $@
+clean:
+ rm *.o main
diff --git a/Simulazione esame/input.txt b/Simulazione esame/input.txt
new file mode 100644
index 0000000..b682329
--- /dev/null
+++ b/Simulazione esame/input.txt
@@ -0,0 +1,8 @@
+120435 NONNA_PAPERA BISCOTTI_CIOCCOLATO 1.60 100
+320001 NONNA_PAPERA TORTA_DI_MELE 5.00 40
+401200 GIANDUJA SCATOLA_CIOCCOLATINI 8.00 85
+301293 PULCINELLA PASTA_VERACE 0.90 300
+034911 WILLY_WONKA PRALINE_DELIZIA 6.80 52
+230099 PULCINELLA PUMMAROLA 2.05 231
+991220 GIANDUJA GIANDUIOTTI 10.00 93
+ -1 FINE_LISTA
diff --git a/Simulazione esame/list.c b/Simulazione esame/list.c
new file mode 100644
index 0000000..f483d08
--- /dev/null
+++ b/Simulazione esame/list.c
@@ -0,0 +1,54 @@
+#include "list.h"
+#include <stdlib.h>
+
+Link list_new_raw() {
+ return malloc(sizeof(Element));
+}
+
+Link list_new(Data data[], size_t n) {
+ if (n == 0) {
+ return NULL;
+ }
+ Link new = list_new_raw();
+ new->data = data[0];
+ new->next = list_new(&data[1], n - 1);
+ return new;
+}
+
+Link list_read(FILE *f, int (*read) (FILE *, Data *)) {
+ Data data;
+ Link head = NULL;
+ Link *last = &head;
+ while (read(f, &data)) {
+ *last = list_new(&data, 1);
+ last = &(*last)->next;
+ }
+ return head;
+}
+
+void list_print(Link head, FILE *f, void (*print) (FILE *f, Data *)) {
+ if (head) {
+ print(f, &head->data);
+ list_print(head->next, f, print);
+ }
+}
+
+float list_float_fold(Link head, float init, float (*op) (float, Data *)) {
+ if (head) {
+ return list_float_fold(head->next, op(init, &head->data), op);
+ }
+ return init;
+}
+
+Link list_filter(Link head, int (*predicate) (Data *, void *), void *param) {
+ if (head) {
+ if (predicate(&head->data, param)) {
+ Link new = list_new(&head->data, 1);
+ new->next = list_filter(head->next, predicate, param);
+
+ return new;
+ }
+ return list_filter(head->next, predicate, param);
+ }
+ return NULL;
+}
diff --git a/Simulazione esame/list.h b/Simulazione esame/list.h
new file mode 100644
index 0000000..bca46c1
--- /dev/null
+++ b/Simulazione esame/list.h
@@ -0,0 +1,21 @@
+#ifndef LIST_H
+#define LIST_H
+
+#include "product.h"
+
+typedef Product Data;
+
+typedef struct Element {
+ Data data;
+ struct Element *next;
+} Element;
+
+typedef Element *Link;
+
+Link list_new(Data data[], size_t n);
+Link list_read(FILE *f, int (*read) (FILE *, Data *));
+void list_print(Link head, FILE *f, void (*print) (FILE *f, Data *));
+float list_float_fold(Link head, float init, float (*op) (float, Data *));
+Link list_filter(Link head, int (*predicate) (Data *, void *), void *param);
+
+#endif
diff --git a/Simulazione esame/main.c b/Simulazione esame/main.c
new file mode 100644
index 0000000..cd8e322
--- /dev/null
+++ b/Simulazione esame/main.c
@@ -0,0 +1,52 @@
+#include "list.h"
+#include "product.h"
+#include "util.h"
+#include <stdlib.h>
+
+Link crealista(FILE *f) {
+ return list_read(f, product_read);
+}
+
+void stampalista(Link head) {
+ FILE *f;
+ if ((f = fopen("output.txt", "a"))) {
+ list_print(head, f, product_print);
+ fclose(f);
+ }
+}
+
+float sum(float acc, Product *p) {
+ return acc + product_price_total(p);
+}
+
+float calcolaval(Link L1) {
+ return list_float_fold(L1, 0, sum);
+}
+
+int compare_producer(Product *p, void *string) {
+ return product_compare_producer(p, (char *)string);
+}
+
+Link listaforni(Link L1, char *fornitore) {
+ return list_filter(L1, compare_producer, fornitore);
+}
+
+int main(void) {
+ FILE *f;
+ if (!(f = fopen("input.txt", "r"))) {
+ return EXIT_FAILURE;
+ }
+
+ Link list = crealista(f);
+ fclose(f);
+
+ stampalista(list);
+
+ printf("prezzo complessivo dei prodotti: %.2f\n", calcolaval(list));
+
+ puts("inserire fornitore da filtrare:");
+ char buf[64];
+ fgets_strip(buf, ARR_LEN(buf), stdin);
+
+ stampalista(listaforni(list, buf));
+}
diff --git a/Simulazione esame/product.c b/Simulazione esame/product.c
new file mode 100644
index 0000000..5202d1c
--- /dev/null
+++ b/Simulazione esame/product.c
@@ -0,0 +1,45 @@
+#include "product.h"
+#include "util.h"
+#include <string.h>
+
+int product_parse(char *s, Product *product) {
+ char format[2 + 4 + 4 + 2 + 2 + 1];
+ snprintf(format, ARR_LEN(format), "%%d%%%zus%%%zus%%f%%u",
+ ARR_LEN(product->producer),
+ ARR_LEN(product->name));
+ sscanf(s, format,
+ &product->code,
+ product->producer,
+ product->name,
+ &product->price,
+ &product->quantity);
+ if (product->code < 0 && strcmp(product->producer, END) == 0) {
+ return 0;
+ }
+ return 1;
+}
+
+int product_read(FILE *f, Product *product) {
+ char buf[256];
+ fgets_strip(buf, ARR_LEN(buf), f);
+ return product_parse(buf, product);
+}
+
+void product_print(FILE *f, Product *product) {
+ fprintf(
+ f,
+ "Codice prodotto: %d\nNome prodotto: %s\nProdotto da: %s\nQuantità : %u\nPrezzo: %.2f\n",
+ product->code,
+ product->name,
+ product->producer,
+ product->quantity,
+ product->price);
+}
+
+float product_price_total(Product *product) {
+ return product->price * product->quantity;
+}
+
+int product_compare_producer(Product *product, char *s) {
+ return strcmp(product->producer, s) == 0;
+}
diff --git a/Simulazione esame/product.h b/Simulazione esame/product.h
new file mode 100644
index 0000000..6da0642
--- /dev/null
+++ b/Simulazione esame/product.h
@@ -0,0 +1,22 @@
+#ifndef PRODUCT_H
+#define PRODUCT_H
+
+#define END "FINE_LISTA"
+
+#include <stdio.h>
+
+typedef struct {
+ int code;
+ char producer[64];
+ char name[64];
+ float price;
+ unsigned quantity;
+} Product;
+
+int product_parse(char *s, Product *product);
+int product_read(FILE *f, Product *product);
+void product_print(FILE *f, Product *product);
+float product_price_total(Product *product);
+int product_compare_producer(Product *product, char *s);
+
+#endif
diff --git a/Simulazione esame/util.c b/Simulazione esame/util.c
new file mode 100644
index 0000000..ac54b5d
--- /dev/null
+++ b/Simulazione esame/util.c
@@ -0,0 +1,10 @@
+#include "util.h"
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+
+char *fgets_strip(char *s, size_t size, FILE *stream) {
+ char *ret = fgets(s, size, stream);
+ s[strcspn(s, "\n")] = '\0';
+ return ret;
+}
diff --git a/Simulazione esame/util.h b/Simulazione esame/util.h
new file mode 100644
index 0000000..a473e60
--- /dev/null
+++ b/Simulazione esame/util.h
@@ -0,0 +1,10 @@
+#ifndef UTIL_H
+#define UTIL_H
+
+#include <stdio.h>
+
+#define ARR_LEN(x) (sizeof(x) / sizeof(*x))
+
+char *fgets_strip(char *s, size_t size, FILE *stream);
+
+#endif
--
GitLab