特色功能单链表通讯录c语言

以下是一个简单的特色功能单链表通讯录的C语言代码示例：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

// 定义通讯录节点结构体
typedef struct AddressBookNode {
    char name[20];
    char phone[20];
    char email[50];
    struct AddressBookNode *next;
} AddressBookNode, *AddressBook;

// 初始化通讯录
void initAddressBook(AddressBook *book) {
    *book = NULL;
}

// 添加联系人
void addContact(AddressBook *book) {
    AddressBookNode *newNode = (AddressBookNode*)malloc(sizeof(AddressBookNode));
    printf("请输入联系人姓名：");
    scanf("%s", newNode->name);
    printf("请输入联系人电话：");
    scanf("%s", newNode->phone);
    printf("请输入联系人邮箱：");
    scanf("%s", newNode->email);
    newNode->next = NULL;

    if (*book == NULL) {
        *book = newNode;
    } else {
        AddressBookNode *p = *book;
        while (p->next != NULL) {
            p = p->next;
        }
        p->next = newNode;
    }

    printf("联系人添加成功！\n");
}

// 删除联系人
void deleteContact(AddressBook *book) {
    char name[20];
    printf("请输入要删除的联系人姓名：");
    scanf("%s", name);

    AddressBookNode *p = *book;
    AddressBookNode *prev = NULL;
    while (p != NULL) {
        if (strcmp(p->name, name) == 0) {
            if (prev == NULL) {
                *book = p->next;
            } else {
                prev->next = p->next;
            }
            free(p);
            printf("联系人删除成功！\n");
            return;
        }
        prev = p;
        p = p->next;
    }

    printf("未找到该联系人！\n");
}

// 修改联系人
void modifyContact(AddressBook book) {
    char name[20];
    printf("请输入要修改的联系人姓名：");
    scanf("%s", name);

    AddressBookNode *p = book;
    while (p != NULL) {
        if (strcmp(p->name, name) == 0) {
            printf("请输入新的联系人电话：");
            scanf("%s", p->phone);
            printf("请输入新的联系人邮箱：");
            scanf("%s", p->email);
            printf("联系人修改成功！\n");
            return;
        }
        p = p->next;
    }

    printf("未找到该联系人！\n");
}

// 查找联系人
void searchContact(AddressBook book) {
    char name[20];
    printf("请输入要查找的联系人姓名：");
    scanf("%s", name);

    AddressBookNode *p = book;
    while (p != NULL) {
        if (strcmp(p->name, name) == 0) {
            printf("联系人姓名：%s\n", p->name);
            printf("联系人电话：%s\n", p->phone);
            printf("联系人邮箱：%s\n", p->email);
            return;
        }
        p = p->next;
    }

    printf("未找到该联系人！\n");
}

// 显示所有联系人
void showAllContacts(AddressBook book) {
    AddressBookNode *p = book;
    while (p != NULL) {
        printf("联系人姓名：%s\n", p->name);
        printf("联系人电话：%s\n", p->phone);
        printf("联系人邮箱：%s\n", p->email);
        p = p->next;
    }
}

// 释放通讯录内存
void releaseAddressBook(AddressBook *book) {
    AddressBookNode *p = *book;
    while (p != NULL) {
        AddressBookNode *tmp = p;
        p = p->next;
        free(tmp);
    }
    *book = NULL;
}

int main() {
    AddressBook book;
    initAddressBook(&book);

    int choice;
    do {
        printf("请选择操作：\n");
        printf("1. 添加联系人\n");
        printf("2. 删除联系人\n");
        printf("3. 修改联系人\n");
        printf("4. 查找联系人\n");
        printf("5. 显示所有联系人\n");
        printf("6. 退出\n");
        scanf("%d", &choice);

        switch (choice) {
            case 1:
                addContact(&book);
                break;
            case 2:
                deleteContact(&book);
                break;
            case 3:
                modifyContact(book);
                break;
            case 4:
                searchContact(book);
                break;
            case 5:
                showAllContacts(book);
                break;
        }
    } while (choice != 6);

    releaseAddressBook(&book);
    return 0;
}

这个通讯录可以进行添加、删除、修改、查找和显示所有联系人的操作。其中使用单链表来存储联系人信息，每个节点包含姓名、电话、邮箱和下一个节点的地址。具体的实现细节可以参考代码中的注释。