用结构体数组写个通讯录系统的c语言代码，包括增加、删除、修改、查找、保存的功能，里面储存联系人的姓名、性别、年龄、家庭电话、移动电话、办公电话

以下是一个简单的通讯录系统的 C 语言代码，使用结构体数组实现：

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

#define MAX_CONTACTS 100

struct Contact {
    char name[50];
    char gender[10];
    int age;
    char home_phone[20];
    char mobile_phone[20];
    char office_phone[20];
};

struct Contact contacts[MAX_CONTACTS];
int num_contacts = 0;

void add_contact() {
    struct Contact new_contact;
    printf("Enter name: ");
    scanf("%s", new_contact.name);
    printf("Enter gender: ");
    scanf("%s", new_contact.gender);
    printf("Enter age: ");
    scanf("%d", &new_contact.age);
    printf("Enter home phone: ");
    scanf("%s", new_contact.home_phone);
    printf("Enter mobile phone: ");
    scanf("%s", new_contact.mobile_phone);
    printf("Enter office phone: ");
    scanf("%s", new_contact.office_phone);
    contacts[num_contacts++] = new_contact;
    printf("Contact added.\n");
}

void delete_contact() {
    char name[50];
    printf("Enter name to delete: ");
    scanf("%s", name);
    int found = 0;
    for (int i = 0; i < num_contacts; i++) {
        if (strcmp(contacts[i].name, name) == 0) {
            found = 1;
            for (int j = i; j < num_contacts - 1; j++) {
                contacts[j] = contacts[j + 1];
            }
            num_contacts--;
            printf("Contact deleted.\n");
            break;
        }
    }
    if (!found) {
        printf("Contact not found.\n");
    }
}

void edit_contact() {
    char name[50];
    printf("Enter name to edit: ");
    scanf("%s", name);
    int found = 0;
    for (int i = 0; i < num_contacts; i++) {
        if (strcmp(contacts[i].name, name) == 0) {
            found = 1;
            printf("Enter new gender: ");
            scanf("%s", contacts[i].gender);
            printf("Enter new age: ");
            scanf("%d", &contacts[i].age);
            printf("Enter new home phone: ");
            scanf("%s", contacts[i].home_phone);
            printf("Enter new mobile phone: ");
            scanf("%s", contacts[i].mobile_phone);
            printf("Enter new office phone: ");
            scanf("%s", contacts[i].office_phone);
            printf("Contact edited.\n");
            break;
        }
    }
    if (!found) {
        printf("Contact not found.\n");
    }
}

void search_contact() {
    char name[50];
    printf("Enter name to search: ");
    scanf("%s", name);
    int found = 0;
    for (int i = 0; i < num_contacts; i++) {
        if (strcmp(contacts[i].name, name) == 0) {
            found = 1;
            printf("Name: %s\n", contacts[i].name);
            printf("Gender: %s\n", contacts[i].gender);
            printf("Age: %d\n", contacts[i].age);
            printf("Home phone: %s\n", contacts[i].home_phone);
            printf("Mobile phone: %s\n", contacts[i].mobile_phone);
            printf("Office phone: %s\n", contacts[i].office_phone);
            break;
        }
    }
    if (!found) {
        printf("Contact not found.\n");
    }
}

void save_contacts() {
    FILE *fp;
    fp = fopen("contacts.txt", "w");
    if (fp == NULL) {
        printf("Error opening file.\n");
        return;
    }
    for (int i = 0; i < num_contacts; i++) {
        fprintf(fp, "%s %s %d %s %s %s\n",
                contacts[i].name, contacts[i].gender, contacts[i].age,
                contacts[i].home_phone, contacts[i].mobile_phone, contacts[i].office_phone);
    }
    fclose(fp);
    printf("Contacts saved to file.\n");
}

void load_contacts() {
    FILE *fp;
    fp = fopen("contacts.txt", "r");
    if (fp == NULL) {
        printf("Error opening file.\n");
        return;
    }
    while (!feof(fp) && num_contacts < MAX_CONTACTS) {
        struct Contact new_contact;
        fscanf(fp, "%s %s %d %s %s %s\n",
               new_contact.name, new_contact.gender, &new_contact.age,
               new_contact.home_phone, new_contact.mobile_phone, new_contact.office_phone);
        contacts[num_contacts++] = new_contact;
    }
    fclose(fp);
    printf("Contacts loaded from file.\n");
}

int main() {
    int choice;
    while (1) {
        printf("\n");
        printf("1. Add contact\n");
        printf("2. Delete contact\n");
        printf("3. Edit contact\n");
        printf("4. Search contact\n");
        printf("5. Save contacts\n");
        printf("6. Load contacts\n");
        printf("7. Quit\n");
        printf("Enter choice: ");
        scanf("%d", &choice);
        switch (choice) {
            case 1:
                add_contact();
                break;
            case 2:
                delete_contact();
                break;
            case 3:
                edit_contact();
                break;
            case 4:
                search_contact();
                break;
            case 5:
                save_contacts();
                break;
            case 6:
                load_contacts();
                break;
            case 7:
                return 0;
            default:
                printf("Invalid choice.\n");
                break;
        }
    }
}

该程序使用结构体 `Contact` 存储联系人信息，其中包含姓名、性别、年龄、家庭电话、移动电话和办公电话。使用结构体数组 `contacts` 存储所有联系人，并使用变量 `num_contacts` 记录当前联系人数量。

程序提供了以下功能：

- 添加联系人：从用户输入中创建一个新的 `Contact` 结构体，并将其添加到 `contacts` 数组中。
- 删除联系人：通过姓名查找联系人，并从 `contacts` 数组中删除它。
- 编辑联系人：通过姓名查找联系人，并允许用户修改其其他信息。
- 查找联系人：通过姓名查找并显示联系人的所有信息。
- 保存联系人：将所有联系人信息写入名为 `contacts.txt` 的文件中。
- 加载联系人：从名为 `contacts.txt` 的文件中读取所有联系人信息，并将其添加到 `contacts` 数组中。

程序使用了菜单循环，用户可以通过输入菜单选项来执行所需的操作。