用c定义一个职工类Employee 数据成员 (private)： 职工姓名 (char *name)、性别 (bool sex)、年龄、工龄、工资 成员函数 (public)： 构造函数：职工基本信息的初始化（姓名、性别、年龄、工龄、工资） 析构函数：释放系统资源（堆空间） 修改职工姓名 修改工资 年薪计算（12×工资+年终奖） 工龄增加 显示职工信息 要求：将类的定义与类成员函数的实现分

以下是用C语言定义一个职工类Employee，数据成员为私有，成员函数为公有：

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

typedef struct {
    char *name;
    bool sex;
    int age;
    int workYears;
    double salary;
} Employee;

Employee *createEmployee(const char *name, bool sex, int age, int workYears, double salary) {
    Employee *employee = (Employee*)malloc(sizeof(Employee));
    int length = strlen(name) + 1;
    employee->name = (char*)malloc(length);
    strcpy(employee->name, name);
    employee->sex = sex;
    employee->age = age;
    employee->workYears = workYears;
    employee->salary = salary;
    return employee;
}

void destroyEmployee(Employee *employee) {
    free(employee->name);
    free(employee);
}

void modifyName(Employee *employee, const char *name) {
    int length = strlen(name) + 1;
    char *newName = (char*)malloc(length);
    strcpy(newName, name);
    free(employee->name);
    employee->name = newName;
}

void modifySalary(Employee *employee, double salary) {
    employee->salary = salary;
}

double getAnnualSalary(const Employee *employee) {
    return 12 * employee->salary + 5000;
}

void increaseWorkYears(Employee *employee, int years) {
    employee->workYears += years;
}

void displayInformation(const Employee *employee) {
    printf("Name: %s\n", employee->name);
    printf("Sex: %s\n", employee->sex ? "Male" : "Female");
    printf("Age: %d\n", employee->age);
    printf("Work years: %d\n", employee->workYears);
    printf("Salary: %.2f\n", employee->salary);
}

使用时，可以通过createEmployee函数创建一个Employee对象，然后使用相关函数对其进行操作，最后使用destroyEmployee函数销毁对象。例如：

int main() {
    Employee *employee = createEmployee("Tom", true, 30, 5, 5000);
    displayInformation(employee);
    modifyName(employee, "Jerry");
    modifySalary(employee, 6000);
    increaseWorkYears(employee, 1);
    printf("Annual salary: %.2f\n", getAnnualSalary(employee));
    displayInformation(employee);
    destroyEmployee(employee);
    return 0;
}