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[mirrors/Programs.git] / c / tel.c
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1/* mudruto1 DU4
2 * sestaveni: gcc tel.c -o tel; nebo: make tel;
3 * spusteni : ./tel
4 */
5
6#include <stdlib.h>
7#include <stdio.h>
8
9//LinkedList + Funkce
10typedef struct {
11 struct ll *next;
12 void *data;
13} ll;
14
15ll *ll_new() {
16 ll *list = (ll*) malloc(sizeof(ll));
17 if(!list) exit(1);
18 list->next = 0;
19 list->data = 0;
20 return list;
21}
22
23void ll_add(ll *list, void *ptr) {
24 for(;list->next != 0;list = (ll *) list->next);
25 list->next = (struct ll *) ll_new();
26 list->data = (void *) ptr;
27}
28
29void ll_rm(ll **llptr) {
30 ll *freeptr = *llptr;
31 *llptr = (ll *) (*llptr)->next;
32 free(freeptr);
33}
34
35void ll_walk(ll *list, void (*function)(ll *ptr)) {
36 for(;list->next != 0;list = (ll *) list->next) function(list);
37}
38
39void ll_walk_data(ll *list, void (*function)(void *ptr)) {
40 for(;list->next != 0;list = (ll *) list->next) if(list->data != 0) function(list->data);
41}
42
43//Kontakt + Funkce
44typedef struct {
45 char name[16];
46 char sname[16];
47 char telno[16];
48} contact;
49
50contact *contact_new() {
51 contact *c = (contact*) malloc(sizeof(contact));
52 if(!c) exit(1);
53 scanf("%15s", c->name);
54 if(c->name[0] == '.') return 0;
55 scanf("%15s", c->sname);
56 scanf("%15s", c->telno);
57 return c;
58}
59
60void contact_print(contact *c) {
61 printf("%-15s %-15s %-15s\n", c->name, c->sname, c->telno);
62}
63
64char contact_match(contact *c, char *str) { //vrati true, kdyz kontakt odpovida
65 return !(strcmp(c->name, str) && strcmp(c->sname, str) && strcmp(c->telno, str));
66}
67
68char contact_compare(contact *a, contact *b) { //vrati true, kdyz jsou kontakty stejne
69 return !(strcmp(a->name, b->name) || strcmp(a->sname, b->sname) || strcmp(a->telno, b->telno));
70}
71
72
73char find_string[64] = "";
74void contact_find(ll *item) {
75 if(contact_match(item->data, find_string)) {
76 contact_print(item->data);
77 }
78}
79
80void contact_remove(ll **llptr) {
81 //bohuzel nejde pouzit contact_find + ll_walk protoze je treba mit referenci na prvni polozku pro pripad potreby jejiho odstraneni
82 while((*llptr)->next != 0) {
83 if(contact_match((*llptr)->data, find_string)) {
84 printf("DELETED: "); contact_print((*llptr)->data);
85 ll_rm(llptr);
86 return;
87 }
88 llptr = (ll **) &((*llptr)->next);
89 }
90}
91
92
93
94int main(void) {
95
96/*
97 //ukazka pouziti linked-listu
98 ll *list = ll_new();
99 ll_add(list, "foo");
100 ll_add(list, "bar");
101 ll_walk_data(list, puts);
102 ll_rm(&list);
103 puts("first item removed...");
104 ll_walk_data(list, puts);
105*/
106
107/*
108 //ukazka pouziti kontaktu
109 contact *c = contact_new();
110 if(!c) exit(2);
111 contact_print(c);
112*/
113
114 puts(
115 "\n\tTelefonni seznam 0.1 (mudruto1)\n"
116 "Zadavejte kontakty ve formatu 'jmeno prijmeni cislo' kazdy na novou radku.\n"
117 "Po zadani posledniho kontaktu zadejte radku zacinajici teckou.\n"
118 "priklad:\n"
119 "tomas mudrunka 123456789\n"
120 "daniel novak 987654321\n"
121 "alice obrovska 456789123\n"
122 ".\n"
123 );
124
125 ll *seznam = (ll *) ll_new();
126 contact *c;
127 while(c = contact_new()) ll_add(seznam, c);
128 puts(
129 "------------------------------------------\n"
130 "jmeno prijmeni cislo\n"
131 );
132 ll_walk_data(seznam, contact_print);
133
134 puts("\n\nCo hledat?");
135 scanf("%15s", find_string);
136 ll_walk(seznam, contact_find);
137
138 puts("\nCo smazat?");
139 scanf("%15s", find_string);
140 contact_remove(&seznam);
141
142 puts("\nTakto vypada seznam bez smazane polozky:\n");
143 ll_walk_data(seznam, contact_print);
144}
145
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