Mình đang thực hành lập trình 1 phần mềm quản lí dữ liệu ô tô. Bài của mình bao gồm:
- 1 lớp Display lưu 3 thông tin số.
- 1 lớp Sound lưu 4 thông tin số.
- 1 lớp CommonInfo lưu các thông tin cá nhân bao gồm: tên, email, keyNumber (string), số km đã đi, số km cần bảo dưỡng định kì (int).
-1 lớp CarInfomation kế thừa lớp CommonInfo bao gồm: con trỏ kiểu Sound, con trỏ kiểu Display.
Sau khi nhập dữ liệu, hiển thị thông tin nhân vật lên console đã khá ổn rồi nhưng mình muốn ghi vào file. Mình cũng vừa học được cách ghi cả đối tượng bằng dòng lệnh: out_File.write(reinterpret_cast<char*> (&carInfo), sizeof(CarInfomation)); nên chưa hiểu lắm nhưng file text của em nó hiển thi ra toàn những kí tự la mã cổ đại hay gì ấy. Dưới là code file .cpp và txt của mình, đoạn ghi code mình code ở void writeFile và xử lí thêm 1 chút ở dưới cùng mong mng giúp đỡ:
File.cpp
#include<windows.h>
#include<fstream>
#include<vector>
#include"CarInfomation.h"
CarInfomation** carList = new CarInfomation*[100];
void mainMenu() {
cout << "------SELECT MENU------";
cout << "\n1. Input setting infomation.";
cout << "\n2. Print setting infomation.";
cout << "\n3. Exit";
cout << "\nYour selection: ";
}
void settingMenu() {
cout << "------SELECT MENU------";
cout << "\n1. Display setting.";
cout << "\n2. Sound setting.";
cout << "\n3. Exit";
cout << "\nYour selection: ";
}
void printMenu() {
cout << "------SELECT MENU------";
cout << "\n1. Print display setting infomation.";
cout << "\n2. Print sound setting infomation.";
cout << "\n3. Print all setting infomation.";
cout << "\n4. Exit.";
cout << "\nYour selection: ";
}
void nhapThongTinDisplay(int &carCnt) {
char answer = 'n';
CarInfomation* carInfo = new CarInfomation();
system("cls");
cout << "\nCar Index: " << carCnt + 1;
carInfo->nhapThongTin();
if (carCnt > 0) {
int viTri = -1;
for (int i = 0; i < carCnt; i++) {
if (carInfo->getKeyNumber() == carList[i]->getKeyNumber()) {
viTri = i;
break;
}
}
if (viTri != -1) {
cout << "\t->This is already existed, data will be overriten." << endl;
carInfo->getDisplay()->nhapThongTin();
carInfo->getSound()->setMedia(carList[viTri]->getSound()->getMedia());
carInfo->getSound()->setCall(carList[viTri]->getSound()->getCall());
carInfo->getSound()->setNavigation(carList[viTri]->getSound()->getNavigation());
carInfo->getSound()->setNotification(carList[viTri]->getSound()->getNotification());
carList[viTri] = carInfo;
}
else {
cout << "\t->This is car, data will be appended to list." << endl;
carInfo->getDisplay()->nhapThongTin();
carInfo->getSound();
carList[carCnt] = carInfo;
carCnt++;
}
}
else {
cout << "\t->This is car, data will be appended to list." << endl;
carInfo->getDisplay()->nhapThongTin();
carInfo->getSound();
carList[carCnt] = carInfo;
carCnt++;
}
}
void nhapThongTinSound(int& carCnt) {
char answer = 'n';
CarInfomation* carInfo = new CarInfomation();
system("cls");
cout << "\nCar Index: " << carCnt + 1;
carInfo->nhapThongTin();
if (carCnt > 0) {
int viTri = -1;
for (int i = 0; i < carCnt; i++) {
if (carInfo->getKeyNumber() == carList[i]->getKeyNumber()) {
viTri = i;
break;
}
}
if (viTri != -1) {
cout << "\t->This is already existed, data will be overriten." << endl;
carInfo->getSound()->nhapThongTin();
carInfo->getDisplay()->setLightLevel(carList[viTri]->getDisplay()->getLightLevel());
carInfo->getDisplay()->setScreenLightLevel(carList[viTri]->getDisplay()->getScreenLightLevel());
carInfo->getDisplay()->setTaploLightLevel(carList[viTri]->getDisplay()->getTaploLightLevel());
carList[viTri] = carInfo;
}
else {
cout << "\t->This is car, data will be appended to list." << endl;
carInfo->getSound()->nhapThongTin();
carInfo->getDisplay();
carList[carCnt] = carInfo;
carCnt++;
}
}
else {
cout << "\t->This is car, data will be appended to list." << endl;
carInfo->getSound()->nhapThongTin();
carInfo->getDisplay();
carList[carCnt] = carInfo;
carCnt++;
}
}
void xuatThongTinDisplay(int& carCnt) {
if(carCnt == 0){
cout << "There is no cars in the list.";
}
else {
cout << left << setw(20) << "Ower name" << left << setw(40) << "Ower email" << left << setw(20) << "Key number" << left << setw(20) << "ODO Number" << left << setw(20) << "Remind Service" << left << setw(15) << "Light level" << left << setw(25) << "Screen light level" << left << setw(25) << "Taplo light level" << endl;
for (size_t i = 0; i < carCnt; i++) {
carList[i]->xuatThongTin();
carList[i]->getDisplay()->xuatThongTin();
cout << endl;
}
}
}
void xuatThongTinSound(int& carCnt) {
if (carCnt == 0) {
cout << "There is no cars in the list.";
}
else {
cout << left << setw(20) << "Ower name" << left << setw(40) << "Ower email" << left << setw(20) << "Key number" << left << setw(20) << "ODO Number" << left << setw(20) << "Remind Service" << left << setw(10) << "Media" << left << setw(10) << "Call" << left << setw(15) << "Navigation" << left << setw(15) << "Notification" << endl;
for (size_t i = 0; i < carCnt; i++) {
carList[i]->xuatThongTin();
carList[i]->getSound()->xuatThongTin();
cout << endl;
}
}
}
void xuatThongTinTat(int& carCnt) {
if (carCnt == 0) {
cout << "There is no cars in the list.";
}
else {
cout << left << setw(20) << "Ower name" << left << setw(40) << "Ower email" << left << setw(20) << "Key number" << left << setw(20) << "ODO Number" << left << setw(20) << "Remind Service" << left << setw(15) << "Light level" << left << setw(25) << "Screen light level" << left << setw(25) << "Taplo light level" << left << setw(10) << "Media" << left << setw(10) << "Call" << left << setw(15) << "Navigation" << left << setw(15) << "Notification" << endl;
for (size_t i = 0; i < carCnt; i++) {
carList[i]->xuatThongTin();
carList[i]->getDisplay()->xuatThongTin();
carList[i]->getSound()->xuatThongTin();
cout << endl;
}
}
}
void writeFile(CarInfomation* carInfo, string fileName) {
ofstream out_File;
out_File.open(fileName, ios_base::out | ios_base::app);
if (out_File.fail()) {
return;
}
out_File.write(reinterpret_cast<char*> (&carInfo), sizeof(CarInfomation));
out_File.close();
}
int main() {
int carCnt = 0;
while (true) {
system("cls");
int select;
mainMenu();
cin >> select;
if (select == 1) {
while (true) {
system("cls");
int select1;
settingMenu();
cin >> select1;
if (select1 == 1) {
system("cls");
char answer = 'n';
cout << "\nWill you input for car " << carCnt + 1 << " (y/n): ";
cin >> answer;
do {
system("cls");
cout << "---Input Display setting---";
nhapThongTinDisplay(carCnt);
cout << "\nWill you input for car " << carCnt + 1 << " (y/n): ";
cin >> answer;
} while (answer == 'y');
}
else if (select1 == 2) {
system("cls");
char answer = 'n';
cout << "\nWill you input for car " << carCnt + 1 << " (y/n): ";
cin >> answer;
do {
system("cls");
cout << "---Input Sound setting---";
nhapThongTinSound(carCnt);
cout << "\nWill you input for car " << carCnt + 1 << " (y/n): ";
cin >> answer;
} while (answer == 'y');
}
else if (select1 == 3) {
break;
}
else {
cout << "Your selection is not exits.";
Sleep(1000);
system("cls");
}
}
}
else if (select == 2) {
while (true) {
system("cls");
int select1;
printMenu();
cin >> select1;
if (select1 == 1) {
char answer = 'a';
do {
system("cls");
xuatThongTinDisplay(carCnt);
cout << endl << "Press e to exit.";
cin >> answer;
} while (answer == 'a');
}
else if (select1 == 2){
char answer = 'a';
do {
system("cls");
xuatThongTinSound(carCnt);
cout << endl << "Press \"e\" to exit.";
cin >> answer;
} while (answer == 'a');
}
else if (select1 == 3) {
char answer = 'a';
do {
system("cls");
xuatThongTinTat(carCnt);
cout << endl << "Press \"e\" to exit.";
cin >> answer;
} while (answer == 'a');
}
else if (select1 == 4) {
break;
}
else {
cout << "Your selection is not exits.";
Sleep(1000);
system("cls");
}
}
}
else if (select == 3) {
system("cls");
cout << "\n\tGOOD BYE";
Sleep(3000);
break;
}
else {
cout << "\nYour selection is not exist.";
Sleep(1000);
system("cls");
}
}
for (int i = 0; i < carCnt; i++) {
writeFile(carList[i], "CarInfomation.txt");
}
system("pause");
return 0;
}
File.txt:
xŸ POàE¸ ø¹ xÐÒ xÐÒ Ðî F½Yzœö¹ \ èò ~I üö¹ ºäYz Sv ÐAv ÌÌÌÌÌÌÌÌÌÌÌÌ (Rv Dv ÌÌÌÌÌÌÌÌÌÌÌÌ Pv 08552366 ' Ð u ¬œu
