职工信息管理系统(C语言实现)

职工信息管理系统是一种常见的信息管理系统，它可以用来管理公司或组织中的职工信息，包括基本信息、薪资信息、福利信息等。下面是一个简单的职工信息管理系统的 C 语言实现。

首先，需要定义职工信息结构体：

#define NAME_LEN 20
#define DEPART_LEN 20

typedef struct {
    int id;
    char name[NAME_LEN];
    int age;
    char depart[DEPART_LEN];
    double salary;
} Worker;

接着，可以定义一些函数来实现职工信息的增删改查等操作。

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

#define MAX_WORKERS 100

Worker workers[MAX_WORKERS];
int num_workers = 0;

void add_worker() {
    if (num_workers >= MAX_WORKERS) {
        printf("The number of workers has reached the maximum.\n");
        return;
    }

    printf("Please input the information of the worker:\n");

    Worker worker;
    printf("ID: ");
    scanf("%d", &worker.id);

    printf("Name: ");
    scanf("%s", worker.name);

    printf("Age: ");
    scanf("%d", &worker.age);

    printf("Department: ");
    scanf("%s", worker.depart);

    printf("Salary: ");
    scanf("%lf", &worker.salary);

    workers[num_workers++] = worker;
    printf("Add worker successfully.\n");
}

void search_worker() {
    printf("Please input the name of the worker you want to search:\n");

    char name[NAME_LEN];
    scanf("%s", name);

    int found = 0;
    for (int i = 0; i < num_workers; i++) {
        if (strcmp(workers[i].name, name) == 0) {
            found = 1;
            printf("ID: %d\tName: %s\tAge: %d\tDepartment: %s\tSalary: %.2f\n",
                   workers[i].id, workers[i].name, workers[i].age,
                   workers[i].depart, workers[i].salary);
        }
    }

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

void delete_worker() {
    printf("Please input the ID of the worker you want to delete:\n");

    int id;
    scanf("%d", &id);

    int found = 0;
    for (int i = 0; i < num_workers; i++) {
        if (workers[i].id == id) {
            found = 1;
            for (int j = i; j < num_workers - 1; j++) {
                workers[j] = workers[j + 1];
            }
            num_workers--;
            printf("Delete worker successfully.\n");
            break;
        }
    }

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

void modify_worker() {
    printf("Please input the ID of the worker you want to modify:\n");

    int id;
    scanf("%d", &id);

    int found = 0;
    for (int i = 0; i < num_workers; i++) {
        if (workers[i].id == id) {
            found = 1;

            printf("Please input the new information of the worker:\n");

            printf("ID: ");
            scanf("%d", &workers[i].id);

            printf("Name: ");
            scanf("%s", workers[i].name);

            printf("Age: ");
            scanf("%d", &workers[i].age);

            printf("Department: ");
            scanf("%s", workers[i].depart);

            printf("Salary: ");
            scanf("%lf", &workers[i].salary);

            printf("Modify worker successfully.\n");
            break;
        }
    }

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

void print_all_workers() {
    printf("All workers:\n");

    for (int i = 0; i < num_workers; i++) {
        printf("ID: %d\tName: %s\tAge: %d\tDepartment: %s\tSalary: %.2f\n",
               workers[i].id, workers[i].name, workers[i].age,
               workers[i].depart, workers[i].salary);
    }
}

void print_menu() {
    printf("Welcome to the worker information management system.\n");
    printf("1. Add worker\n");
    printf("2. Search worker\n");
    printf("3. Delete worker\n");
    printf("4. Modify worker\n");
    printf("5. Print all workers\n");
    printf("6. Exit\n");
}

int main() {
    int choice = 0;

    while (choice != 6) {
        print_menu();
        printf("Please input your choice: ");
        scanf("%d", &choice);

        switch (choice) {
            case 1:
                add_worker();
                break;
            case 2:
                search_worker();
                break;
            case 3:
                delete_worker();
                break;
            case 4:
                modify_worker();
                break;
            case 5:
                print_all_workers();
                break;
            case 6:
                printf("Goodbye!\n");
                break;
            default:
                printf("Invalid choice.\n");
                break;
        }
    }

    return 0;
}

这个程序中，我们定义了一个 `Worker` 结构体来存储职工信息，使用一个全局数组 `workers` 来存储所有的职工信息。然后，我们定义了一些函数来实现职工信息的增删改查等操作。在 `main()` 函数中，我们通过一个循环来不断显示菜单，并根据用户的选择调用相应的函数。