如何使用C语言实现人事管理软件的核心功能？

void findEmployeeByID(int id, const char filename) {
FILE file = fopen(filename, “rb”);
Employee emp;
int found = 0;

while (fread(&emp, sizeof(Employee), 1, file)) {
    if (emp.employeeID == id) {
        printf("找到员工：%s, 部门：%s\n", emp.name, emp.department);
        found = 1;
        break;
    }
}
fclose(file);

if (!found) {
    printf("未找到ID为 %d 的员工！\n", id);
}

}