C语言编写的员工管理系统

好的，员工管理系统是一个比较常见的应用程序，用于管理公司或组织中的员工信息。下面是一个简单的C语言编写的员工管理系统示例：

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

#define MAX_EMPLOYEES 100

struct Employee {
    int id;
    char name[50];
    int age;
    float salary;
};

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

void add_employee() {
    if (num_employees >= MAX_EMPLOYEES) {
        printf("Maximum number of employees reached.\n");
        return;
    }

    struct Employee new_employee;

    printf("Enter employee ID: ");
    scanf("%d", &new_employee.id);

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

    printf("Enter employee age: ");
    scanf("%d", &new_employee.age);

    printf("Enter employee salary: ");
    scanf("%f", &new_employee.salary);

    employees[num_employees] = new_employee;
    num_employees++;

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

void list_employees() {
    if (num_employees == 0) {
        printf("There are no employees.\n");
        return;
    }

    printf("%-5s %-20s %-5s %-10s\n", "ID", "Name", "Age", "Salary");

    for (int i = 0; i < num_employees; i++) {
        struct Employee employee = employees[i];
        printf("%-5d %-20s %-5d $%-10.2f\n", employee.id, employee.name, employee.age, employee.salary);
    }
}

void search_employee() {
    if (num_employees == 0) {
        printf("There are no employees.\n");
        return;
    }

    int id;
    printf("Enter employee ID to search: ");
    scanf("%d", &id);

    for (int i = 0; i < num_employees; i++) {
        struct Employee employee = employees[i];
        if (employee.id == id) {
            printf("%-5s %-20s %-5s %-10s\n", "ID", "Name", "Age", "Salary");
            printf("%-5d %-20s %-5d $%-10.2f\n", employee.id, employee.name, employee.age, employee.salary);
            return;
        }
    }

    printf("Employee with ID %d not found.\n", id);
}

void delete_employee() {
    if (num_employees == 0) {
        printf("There are no employees.\n");
        return;
    }

    int id;
    printf("Enter employee ID to delete: ");
    scanf("%d", &id);

    for (int i = 0; i < num_employees; i++) {
        struct Employee employee = employees[i];
        if (employee.id == id) {
            for (int j = i; j < num_employees - 1; j++) {
                employees[j] = employees[j + 1];
            }

            num_employees--;
            printf("Employee with ID %d deleted successfully.\n", id);
            return;
        }
    }

    printf("Employee with ID %d not found.\n", id);
}

int main() {
    int choice;

    while (1) {
        printf("\n");
        printf("1. Add employee\n");
        printf("2. List employees\n");
        printf("3. Search employee\n");
        printf("4. Delete employee\n");
        printf("5. Exit\n");

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

        switch (choice) {
            case 1:
                add_employee();
                break;
            case 2:
                list_employees();
                break;
            case 3:
                search_employee();
                break;
            case 4:
                delete_employee();
                break;
            case 5:
                exit(0);
            default:
                printf("Invalid choice.\n");
        }
    }

    return 0;
}

该程序使用结构体来存储员工信息，包括ID、姓名、年龄和薪水。它提供了一些基本操作，如添加、列出、搜索和删除员工。用户可以根据需要选择这些操作。