Mega Code Archive
Writing a Class to a File
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#include <fstream>
#include <iostream>
using namespace std;
class Animal
{
public:
Animal(int weight, long days):itsWeight(weight),itsNumberDaysAlive(days){}
~Animal(){}
int GetWeight()const { return itsWeight; }
void SetWeight(int weight) { itsWeight = weight; }
long GetDaysAlive()const { return itsNumberDaysAlive; }
void SetDaysAlive(long days) { itsNumberDaysAlive = days; }
private:
int itsWeight;
long itsNumberDaysAlive;
};
int main(){
ofstream fout("text.txt",ios::binary);
if (!fout)
{
cout << "Unable to open for writing.\n";
return(1);
}
Animal Bear(50,100);
fout.write((char*) &Bear,sizeof Bear);
fout.close();
ifstream fin("text.txt",ios::binary);
if (!fin)
{
cout << "Unable to open for reading.\n";
return(1);
}
Animal BearTwo(1,1);
cout << "BearTwo weight: " << BearTwo.GetWeight() << endl;
cout << "BearTwo days: " << BearTwo.GetDaysAlive() << endl;
fin.read((char*) &BearTwo, sizeof BearTwo);
cout << "BearTwo weight: " << BearTwo.GetWeight() << endl;
cout << "BearTwo days: " << BearTwo.GetDaysAlive() << endl;
fin.close();
return 0;
}
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