Answer to Question #180529 in C++ for Anshu Kumar

Question

create a class names as car with data member as carcompany,cost of car,number of airbags.create a file and the write a array of object into file.search the data by carcompany from the store file and display the result.

Answer 1

#include <iostream>
#include <fstream>

using namespace std;


class Car
{
  string _nameOfCarCompany;
  int _airbagsNumber;

public:

  Car(){};
  Car(string name, int number): _nameOfCarCompany(name), _airbagsNumber(number){}

  string getNameOfCarCompany()
  {
    return _nameOfCarCompany;
  }

  int getAirbagsNumber()
  {
    return _airbagsNumber;
  }

  void setNameOfCarCompany(string name)
  {
    _nameOfCarCompany = name;
  }

  void setAirbagsNumber(int number)
  {
    _airbagsNumber = number;
  }

};

int main()
{
  Car *cars[3];
  int i;
  string name = "";
  int number;
  for(i = 0; i < 3; ++i)
  {
    cout << "Enter the name of car company: ";
    cin >> name;
    cout << "Enter the number of airbags: ";
    cin >> number;
    cars[i] = new Car(name, number);
  }
  fstream fs;
  string buf = "";
  int numBuf;
  fs.open("cars.txt", fstream::out | fstream::in | fstream::app);
  if(fs.is_open())
  {
    i = 0;
    while(!fs.eof())
    {
      buf = cars[i]->getNameOfCarCompany();
      fs << buf << "\n";
      numBuf = cars[i]->getAirbagsNumber();
      fs << numBuf << "\n";
      i++;
    }
  }
  else
    cout << "File haven't been opened:(" << endl;
  fs.close();
  string carToFind = "";
  cout << "Enter the name of car company you want to find: ";
  cin >> carToFind;
  fs.open("cars.txt", fstream::in | fstream::out | fstream::app);
  if(fs.is_open())
  {
    i = 0;
    while(!fs.eof())
    {
      buf = "";
      numBuf = 0;
      fs >> buf;
      cars[i]->setNameOfCarCompany(buf);
      fs >> numBuf;
      cars[i]->setAirbagsNumber(numBuf);
      i++;
    }
  }
  else
    cout << "File haven't been opened:(" << endl;
  fs.close();
  for(i = 0; i < 3; ++i)
  {
    if(cars[i]->getNameOfCarCompany() == carToFind)
    {
      cout << "Car you was looking for: " << endl;
      cout << "Name of car company: " << cars[i]->getNameOfCarCompany() << endl;
      cout << "Number of airbags: " << cars[i]->getAirbagsNumber() << endl;
    }
  }
  return 0;
}