Q. Write a C++ program to open output file 'a.txt' and append data to it.
Answer:
Output:
Answer:
#include<iostream>
#include<string>
#include<fstream>
using namespace std;
int main()
{
ofstream fout; // Create Object of Ofstream
ifstream fin;
fin.open("a.txt");
fout.open ("a.txt",ios::app); // Append mode
if(fin.is_open())
fout<< "\n Writing to a file opened from program.\n"; // Writing data to file
cout<<"\n Data has been appended to file";
fin.close();
fout.close(); // Closing the file
return 0;
}
Output:
