1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <string.h>
4
5
6 typedef struct Contacts_infomation{
7 char name[13];
8 char work_unit[61];
9 char phone_number[12];
10 char E_mail[61];
11 struct Contacts_infomation *next;
12 }con_info;
13
14
15 con_info * Creat_node(void)
16 {
17 con_info *new;
18
19 new = (con_info *)malloc(sizeof(con_info));
20 if(!new){
21 printf("Malloc Error!\n");
22 exit(-1);
23 }
24 new->next = NULL;
25
26 return new;
27 }
28
29 int insert_node(con_info ** phead)
30 {
31 con_info *new, *cur;
32
33 cur = *phead;
34 new = Creat_node();
35 if(!new){
36 return -1;
37 }
38
39 printf("please input name,work unit,phone number and E-mail (separated by enter):\n");
40 printf("name:");
41 scanf("%s", new->name);
42 printf("work unit:");
43 scanf("%s", new->work_unit);
44 printf("phone number:");
45 scanf("%s", new->phone_number);
46 printf("E-mail:");
47 scanf("%s", new->E_mail);
48
49 if(!(*phead)){
50 *phead = new;
51 return 0;
52 }
53 if(strncmp((*phead)->name,new->name,3) > 0){
54 new->next = *phead;
55 *phead = new;
56 return 0;
57 }
58 while(cur->next){
59 if(strncmp(cur->next->name, new->name,3) > 0){
60 new->next = cur->next;
61 cur->next = new;
62 return 0;
63 }
64 }
65 cur->next = new;
66
67 return 0;
68 }
69 int del_node(con_info **phead){
70 con_info *cur = *phead;
71 char name[13];
72
73 if(!cur){
74 printf("Address book is empty\n");
75 return -1;
76 }
77 printf("please input want delete name: ");
78 scanf("%s", name);
79
80 if(strcasecmp((*phead)->name, name) == 0){
81 con_info *tmp = (*phead)->next;
82 free(*phead);
83 *phead = tmp;
84 return 0;
85 }
86 while(cur->next){
87 if(strcmp(cur->next->name, name) == 0){
88 con_info *tmp = cur->next;
89 cur->next = tmp->next;
90 free(tmp);
91 return 0;
92 }
93 cur = cur->next;
94 }
95 getchar();
96 printf("\n\nCan't find %s\n", name);
97 printf("\n\nPlease input Enter continue...");
98 char ch = getchar();
99
100 return 0;
101 }
102
103 int mod_node(con_info **phead){
104 con_info *cur = *phead;
105 char name[13];
106 char reply[10];
107
108 if(!cur){
109 printf("Address book is empty\n");
110 return -1;
111 }
112 printf("Please input want modify name: ");
113 scanf("%s", name);
114 while(cur){
115 if(strcasecmp(cur->name, name) == 0){
116
117 printf("Modify name?(y/any key): ");
118 scanf("%s", reply);
119 if(strcmp(reply, "y") == 0){
120 printf("Please new input name: ");
121 scanf("%s", cur->name);
122 }
123 printf("Modify work unit?(y/any key): ");
124 scanf("%s", reply);
125 if(strcmp(reply, "y") == 0){
126 printf("Please input new work_unit: ");
127 scanf("%s", cur->work_unit);
128 }
129 printf("Modify phone number?(y/any key): ");
130 scanf("%s", reply);
131 if(strcmp(reply, "y") == 0){
132 printf("Please input new phone number: ");
133 scanf("%s", cur->phone_number);
134 }
135 printf("Modify E-mail?(y/any key): ");
136 scanf("%s", reply);
137 if(strcmp(reply, "y") == 0){
138 printf("Please input new E-mail: ");
139 scanf("%s", cur->E_mail);
140 }
141 return 0;
142 }
143 cur = cur->next;
144 }
145 getchar();
146 printf("No contact was found.\n");
147 printf("\n\nPlease input Enter continue...");
148 char ch = getchar();
149 return 0;
150 }
151
152 int search_node(con_info **phead){
153 con_info *cur = *phead;
154 char in[13];
155 if(!cur){
156 printf("Address book is empty\n");
157 return -1;
158 }
159 printf("Please input name or phone number: ");
160 scanf("%s", in);
161
162 while(cur){
163 if(strcasecmp(cur->name, in) == 0 || strcmp(cur->phone_number, in) == 0){
164 printf("name\t\twork unit\t\t\t\t\t\t\tphone number\t\tE-mail\n");
165 printf("%-16s%-64s%-24s%-30s\n", cur->name, cur->work_unit, cur->phone_number, cur->E_mail);
166 getchar();
167 printf("Please input Enter continue...");
168 char ch = getchar();
169
170 return 0;
171 }
172 cur = cur->next;
173 }
174 printf("\n\nCan't find %s\n", in);
175 getchar();
176 printf("Please input Enter continue...");
177 char ch = getchar();
178
179 return 0;
180 }
181 int print_con(con_info *phead){
182 con_info *cur = phead;
183
184 printf("name\t\twork unit\t\t\t\t\t\t\tphone number\t\tE-mail\n");
185 if(!cur){
186 printf("NULL\n");
187 return -1;
188 }
189 while(cur){
190 printf("%-16s%-64s%-24s%-30s\n", cur->name, cur->work_unit, cur->phone_number, cur->E_mail);
191 cur = cur->next;
192 }
193 getchar();
194 printf("\n\nPlease input Enter continue...");
195 char ch = getchar();
196
197 return 0;
198 }
199
200
201
202
203 int main(void)
204 {
205 con_info *head = NULL;
206 char op[20];
207 char dd[20];
208
209 do{
210 printf("\n\n\n1.New contacts\n2.Delete contact\n3.Unfoling contacts\n4.Modify contacts\n5.serch\n6.Exit\n\n8.Clean screen\n\n********************************\n\n\n");
211 printf("Please inpu op: ");
212 scanf("%s", op);
213 printf("\n\n");
214 if(!strcmp(op,"1")){
215 insert_node(&head);
216 }else if(!strcmp(op, "2")){
217 del_node(&head);
218 }else if(!strcmp(op, "3")){
219 print_con(head);
220 }else if(!strcmp(op, "4")){
221 mod_node(&head);
222 }else if(!strcmp(op, "5")){
223 search_node(&head);
224 }else if(!strcmp(op, "6")){
225 break;
226 }else if(!strcmp(op, "8")){
227 //printf("\033[2J") ;
228 system("clear");
229 }
230 else{
231 printf("Ipunt opearton error\n");
232 }
233 }while(1);
234
235 return 0;
236 }
由于通讯录不怎么需要倒序操作，又是一个简易的，所以干脆就使用了单向链表。Running demo:
交互界面（^_^简易的，所以特别简陋）：
各个功能演示一遍：
来源：https://www.cnblogs.com/BMing/p/10003247.html