使用c++写一个通讯录系统

好的，我可以为您提供一个使用 C 语言编写的通讯录系统的基本框架。首先，您需要定义一个结构体来存储每个联系人的信息，例如姓名、电话号码、电子邮件地址等。然后，您可以使用链表来存储所有联系人的信息，并实现一些基本的操作，例如添加、删除、查找和显示联系人等。以下是一个简单的示例代码：

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

#define MAX_NAME_LEN 20
#define MAX_PHONE_LEN 15
#define MAX_EMAIL_LEN 30

typedef struct contact {
    char name[MAX_NAME_LEN];
    char phone[MAX_PHONE_LEN];
    char email[MAX_EMAIL_LEN];
    struct contact *next;
} Contact;

Contact *head = NULL;

void add_contact() {
    Contact *new_contact = (Contact *) malloc(sizeof(Contact));
    printf("Enter name: ");
    scanf("%s", new_contact->name);
    printf("Enter phone number: ");
    scanf("%s", new_contact->phone);
    printf("Enter email address: ");
    scanf("%s", new_contact->email);
    new_contact->next = head;
    head = new_contact;
    printf("Contact added successfully!\n");
}

void delete_contact() {
    char name[MAX_NAME_LEN];
    printf("Enter name to delete: ");
    scanf("%s", name);
    Contact *prev = NULL;
    Contact *curr = head;
    while (curr != NULL) {
        if (strcmp(curr->name, name) == 0) {
            if (prev == NULL) {
                head = curr->next;
            } else {
                prev->next = curr->next;
            }
            free(curr);
            printf("Contact deleted successfully!\n");
            return;
        }
        prev = curr;
        curr = curr->next;
    }
    printf("Contact not found!\n");
}

void search_contact() {
    char name[MAX_NAME_LEN];
    printf("Enter name to search: ");
    scanf("%s", name);
    Contact *curr = head;
    while (curr != NULL) {
        if (strcmp(curr->name, name) == 0) {
            printf("Name: %s\n", curr->name);
            printf("Phone: %s\n", curr->phone);
            printf("Email: %s\n", curr->email);
            return;
        }
        curr = curr->next;
    }
    printf("Contact not found!\n");
}

void display_contacts() {
    Contact *curr = head;
    while (curr != NULL) {
        printf("Name: %s\n", curr->name);
        printf("Phone: %s\n", curr->phone);
        printf("Email: %s\n", curr->email);
        curr = curr->next;
    }
}

int main() {
    int choice;
    while (1) {
        printf("1. Add contact\n");
        printf("2. Delete contact\n");
        printf("3. Search contact\n");
        printf("4. Display contacts\n");
        printf("5. Exit\n");
        printf("Enter your choice: ");
        scanf("%d", &choice);
        switch (choice) {
            case 1:
                add_contact();
                break;
            case 2:
                delete_contact();
                break;
            case 3:
                search_contact();
                break;
            case 4:
                display_contacts();
                break;
            case 5:
                exit(0);
            default:
                printf("Invalid choice!\n");
        }
    }
    return 0;
}

这个通讯录系统包括添加、删除、查找和显示联系人等基本操作。您可以根据自己的需求进行修改和扩展。