写一个员工通讯录管理系统的c语言代码

好的，这是一个简单的员工通讯录管理系统的C语言代码，包括添加员工信息、查询员工信息、修改员工信息和删除员工信息等功能。

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

#define MAX_EMPLOYEES 100

struct Employee {
    char name[20];
    char phone[20];
    char email[30];
};

struct Employee employees[MAX_EMPLOYEES];
int numEmployees = 0;

void addEmployee() {
    if (numEmployees >= MAX_EMPLOYEES) {
        printf("Unable to add employee, maximum number of employees reached.\n");
        return;
    }

    struct Employee employee;

    printf("Enter employee name: ");
    scanf("%s", employee.name);

    printf("Enter employee phone number: ");
    scanf("%s", employee.phone);

    printf("Enter employee email: ");
    scanf("%s", employee.email);

    employees[numEmployees++] = employee;

    printf("Employee added successfully.\n");
}

void searchEmployee() {
    char name[20];
    int found = 0;

    printf("Enter employee name to search: ");
    scanf("%s", name);

    for (int i = 0; i < numEmployees; i++) {
        if (strcmp(employees[i].name, name) == 0) {
            found = 1;
            printf("Employee found: %s %s %s\n", employees[i].name, employees[i].phone, employees[i].email);
        }
    }

    if (!found) {
        printf("Employee not found.\n");
    }
}

void updateEmployee() {
    char name[20];
    int found = 0;

    printf("Enter employee name to update: ");
    scanf("%s", name);

    for (int i = 0; i < numEmployees; i++) {
        if (strcmp(employees[i].name, name) == 0) {
            found = 1;

            printf("Enter new phone number: ");
            scanf("%s", employees[i].phone);

            printf("Enter new email: ");
            scanf("%s", employees[i].email);

            printf("Employee updated successfully.\n");
        }
    }

    if (!found) {
        printf("Employee not found.\n");
    }
}

void deleteEmployee() {
    char name[20];
    int found = 0;

    printf("Enter employee name to delete: ");
    scanf("%s", name);

    for (int i = 0; i < numEmployees; i++) {
        if (strcmp(employees[i].name, name) == 0) {
            found = 1;
            for (int j = i; j < numEmployees - 1; j++) {
                employees[j] = employees[j + 1];
            }
            numEmployees--;
            printf("Employee deleted successfully.\n");
        }
    }

    if (!found) {
        printf("Employee not found.\n");
    }
}

void displayMenu() {
    printf("\n");
    printf("Employee Management System\n");
    printf("--------------------------\n");
    printf("1. Add Employee\n");
    printf("2. Search Employee\n");
    printf("3. Update Employee\n");
    printf("4. Delete Employee\n");
    printf("5. Exit\n");
    printf("\n");
}

int main() {
    int choice;

    do {
        displayMenu();

        printf("Enter your choice: ");
        scanf("%d", &choice);

        switch (choice) {
            case 1:
                addEmployee();
                break;
            case 2:
                searchEmployee();
                break;
            case 3:
                updateEmployee();
                break;
            case 4:
                deleteEmployee();
                break;
            case 5:
                printf("Exiting program...\n");
                break;
            default:
                printf("Invalid choice, please try again.\n");
                break;
        }
    } while (choice != 5);

    return 0;
}

这个代码使用了一个结构体来存储每个员工的姓名、电话号码和电子邮件地址。它使用一个数组来存储所有员工的信息，并提供了添加、查询、更新和删除员工的功能。