use std::collections::HashMap; #[derive(Debug, Clone)] struct PatientData { patient_id: u64, first_name: String, middle_name: String, last_name: String, age: u64, identification_no: u64, birth_cert_no: u64, passport_no: u64, gender: String, blood_group: String, medical_report: String, } #[derive(Debug)] struct PatientRegistry { patients: HashMap<u64, PatientData>, } impl PatientRegistry { fn new() -> Self { Self { patients: HashMap::new(), } } fn upload_patient_data(&mut self, patient_data: PatientData) { self.patients.insert(patient_data.patient_id, patient_data); } fn read_patient_data(&self, id: u64) -> Option<&PatientData> { self.patients.get(&id) } fn update_patient_data(&mut self, patient_data: PatientData, id: u64) -> String { if let Some(existing_patient) = self.patients.get_mut(&id) { // Update the fields as needed existing_patient.first_name = patient_data.first_name; existing_patient.middle_name = patient_data.middle_name; existing_patient.last_name = patient_data.last_name; existing_patient.age = patient_data.age; existing_patient.identification_no = patient_data.identification_no; existing_patient.birth_cert_no = patient_data.birth_cert_no; existing_patient.passport_no = patient_data.passport_no; existing_patient.gender = patient_data.gender; existing_patient.blood_group = patient_data.blood_group; existing_patient.medical_report = patient_data.medical_report; "Updated successfully".to_string() } else { "Such patient does not exist".to_string() } } } fn main() { let mut patient_registry = PatientRegistry::new(); // Example data let patient_data = PatientData { patient_id: 1, first_name: String::from("John"), middle_name: String::from("Doe"), last_name: String::from("Smith"), age: 30, identification_no: 12345, birth_cert_no: 67890, passport_no: 54321, gender: String::from("Male"), blood_group: String::from("O+"), medical_report: String::from("Some medical report"), }; // Upload patient data patient_registry.upload_patient_data(patient_data.clone()); // Read patient data match patient_registry.read_patient_data(1) { Some(patient) => println!("Read patient data: {:?}", patient), None => println!("Patient not found"), } // Update patient data let updated_data = PatientData { first_name: String::from("Updated John"), // ... other updated fields ..patient_data.clone() }; let result = patient_registry.update_patient_data(updated_data, 1); println!("{}", result); }