使用c语言设计一个通讯录程序，实现通讯录信息的录入，添加删除显示的功能，使用结构体存储通讯录的记录信息，使用链表实现通讯录信息的增删及查询显示，使用文件储存通讯录

好的，我可以帮你解答这个问题。下面是示例代码：

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

#define MAX_NAME_LEN 20
#define MAX_PHONE_LEN 15

// 定义通讯录结构体
typedef struct _Contact {
    char name[MAX_NAME_LEN];
    char phone[MAX_PHONE_LEN];
    struct _Contact* next;
} Contact;

// 定义通讯录链表头
Contact* head = NULL;

// 函数声明
void add_contact();
void delete_contact();
void display_contact();
void search_contact();
void save_contact();
void load_contact();

int main() {
    int choice;
    do {
        printf("\n");
        printf("1. Add contact\n");
        printf("2. Delete contact\n");
        printf("3. Display contacts\n");
        printf("4. Search contact\n");
        printf("5. Save contacts to file\n");
        printf("6. Load contacts from file\n");
        printf("0. Exit\n");
        printf("Enter your choice: ");
        scanf("%d", &choice);

        switch (choice) {
            case 1:
                add_contact();
                break;
            case 2:
                delete_contact();
                break;
            case 3:
                display_contact();
                break;
            case 4:
                search_contact();
                break;
            case 5:
                save_contact();
                break;
            case 6:
                load_contact();
                break;
            case 0:
                break;
            default:
                printf("Invalid choice!\n");
                break;
        }
    } while (choice != 0);

    return 0;
}

// 添加通讯录记录
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);
    new_contact->next = head;
    head = new_contact;
    printf("Contact added successfully!\n");
}

// 删除通讯录记录
void delete_contact() {
    char name[MAX_NAME_LEN];
    printf("Enter name to delete: ");
    scanf("%s", name);

    Contact* curr_contact = head;
    Contact* prev_contact = NULL;
    while (curr_contact != NULL && strcmp(curr_contact->name, name) != 0) {
        prev_contact = curr_contact;
        curr_contact = curr_contact->next;
    }

    if (curr_contact == NULL) {
        printf("Contact not found!\n");
    } else {
        if (prev_contact == NULL) {
            head = curr_contact->next;
        } else {
            prev_contact->next = curr_contact->next;
        }
        free(curr_contact);
        printf("Contact deleted successfully!\n");
    }
}

// 显示所有通讯录记录
void display_contact() {
    Contact* curr_contact = head;
    if (curr_contact == NULL) {
        printf("No contacts found!\n");
    } else {
        while (curr_contact != NULL) {
            printf("%s\t%s\n", curr_contact->name, curr_contact->phone);
            curr_contact = curr_contact->next;
        }
    }
}

// 搜索通讯录记录
void search_contact() {
    char name[MAX_NAME_LEN];
    printf("Enter name to search: ");
    scanf("%s", name);

    Contact* curr_contact = head;
    while (curr_contact != NULL && strcmp(curr_contact->name, name) != 0) {
        curr_contact = curr_contact->next;
    }

    if (curr_contact == NULL) {
        printf("Contact not found!\n");
    } else {
        printf("%s\t%s\n", curr_contact->name, curr_contact->phone);
    }
}

// 将通讯录记录保存到文件中
void save_contact() {
    char filename[MAX_NAME_LEN];
    printf("Enter filename to save: ");
    scanf("%s", filename);

    FILE* fp = fopen(filename, "w");
    if (fp == NULL) {
        printf("File open failed!\n");
        return;
    }

    Contact* curr_contact = head;
    while (curr_contact != NULL) {
        fprintf(fp, "%s\t%s\n", curr_contact->name, curr_contact->phone);
        curr_contact = curr_contact->next;
    }

    fclose(fp);
    printf("Contacts saved successfully!\n");
}

// 从文件中加载通讯录记录
void load_contact() {
    char filename[MAX_NAME_LEN];
    printf("Enter filename to load: ");
    scanf("%s", filename);

    FILE* fp = fopen(filename, "r");
    if (fp == NULL) {
        printf("File open failed!\n");
        return;
    }

    char name[MAX_NAME_LEN];
    char phone[MAX_PHONE_LEN];
    while (fscanf(fp, "%s\t%s\n", name, phone) != EOF) {
        Contact* new_contact = (Contact*) malloc(sizeof(Contact));
        strcpy(new_contact->name, name);
        strcpy(new_contact->phone, phone);
        new_contact->next = head;
        head = new_contact;
    }

    fclose(fp);
    printf("Contacts loaded successfully!\n");
}

这是一个基本的通讯录程序，使用了结构体存储通讯录记录信息，使用链表实现通讯录信息的增删及查询显示，使用文件储存通讯录。你可以根据需要进行修改和完善。