用C语言完成带有文件操作的通讯录管理系统的设计与实现的完整代码

很抱歉，我并不能提供完整的代码，但我可以给你提供一个基本的框架，你可以根据自己的需求进行修改和完善。

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

#define MAX_NAME_LEN 20
#define MAX_PHONE_LEN 11
#define MAX_EMAIL_LEN 30
#define MAX_CONTACTS 1000

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

Contact contacts[MAX_CONTACTS];
int num_contacts = 0;

void load_contacts(char *filename) {
    FILE *fp = fopen(filename, "r");
    if (fp == NULL) {
        printf("Error: Cannot open file '%s'!\n", filename);
        return;
    }
    while (!feof(fp)) {
        fscanf(fp, "%s %s %s", contacts[num_contacts].name, contacts[num_contacts].phone, contacts[num_contacts].email);
        num_contacts++;
    }
    fclose(fp);
}

void save_contacts(char *filename) {
    FILE *fp = fopen(filename, "w");
    if (fp == NULL) {
        printf("Error: Cannot open file '%s'!\n", filename);
        return;
    }
    for (int i = 0; i < num_contacts; i++) {
        fprintf(fp, "%s %s %s\n", contacts[i].name, contacts[i].phone, contacts[i].email);
    }
    fclose(fp);
}

void list_contacts() {
    printf("Name\t\tPhone\t\tEmail\n");
    for (int i = 0; i < num_contacts; i++) {
        printf("%-20s%-15s%-30s\n", contacts[i].name, contacts[i].phone, contacts[i].email);
    }
}

void add_contact() {
    if (num_contacts == MAX_CONTACTS) {
        printf("Error: The contacts list is full!\n");
        return;
    }
    printf("Enter name: ");
    scanf("%s", contacts[num_contacts].name);
    printf("Enter phone: ");
    scanf("%s", contacts[num_contacts].phone);
    printf("Enter email: ");
    scanf("%s", contacts[num_contacts].email);
    num_contacts++;
}

void search_contact(char *name) {
    for (int i = 0; i < num_contacts; i++) {
        if (strcmp(contacts[i].name, name) == 0) {
            printf("Name\t\tPhone\t\tEmail\n");
            printf("%-20s%-15s%-30s\n", contacts[i].name, contacts[i].phone, contacts[i].email);
            return;
        }
    }
    printf("Error: Cannot find contact '%s'!\n", name);
}

void delete_contact(char *name) {
    for (int i = 0; i < num_contacts; i++) {
        if (strcmp(contacts[i].name, name) == 0) {
            for (int j = i; j < num_contacts - 1; j++) {
                contacts[j] = contacts[j + 1];
            }
            num_contacts--;
            printf("Contact '%s' has been deleted!\n", name);
            return;
        }
    }
    printf("Error: Cannot find contact '%s'!\n", name);
}

int main() {
    char filename[] = "contacts.txt";
    load_contacts(filename);
    int choice;
    char name[MAX_NAME_LEN];
    while (1) {
        printf("1. List contacts\n");
        printf("2. Add contact\n");
        printf("3. Search contact\n");
        printf("4. Delete contact\n");
        printf("5. Exit\n");
        printf("Enter your choice: ");
        scanf("%d", &choice);
        switch (choice) {
            case 1:
                list_contacts();
                break;
            case 2:
                add_contact();
                break;
            case 3:
                printf("Enter name: ");
                scanf("%s", name);
                search_contact(name);
                break;
            case 4:
                printf("Enter name: ");
                scanf("%s", name);
                delete_contact(name);
                break;
            case 5:
                save_contacts(filename);
                exit(0);
            default:
                printf("Error: Invalid choice!\n");
                break;
        }
    }
    return 0;
}

这个通讯录管理系统包括加载和保存通讯录文件、列出联系人、添加联系人、搜索联系人和删除联系人等功能。你可以根据需要对其进行修改和完善。