How to create a txt file, read, write in c++ open for more information

[aravind12345]

Hello briefly explaning my question how do i create a text file read and write in it but every time i reopen the program i must not overrie the data in the text file please help me i a new to c++ and computer programming.

Thanks in advance

[weaknessforcats]

When you open the file, specify that you want to append. This will stop the overwrite of the current file contents.

[aravind12345]

How do i do that exactly

[weaknessforcats]

Maybe you could post how you are opening the file.

[aravind12345]

something like this

and so every time i run this it should and i open the text file i should see this sentence repeatedly "Writing this to a file."

#include <iostream>
#include <fstream>
using namespace std;
 
int main () {
  ofstream myfile;
  myfile.open ("example.txt");
  myfile << "Writing this to a file.\n";
  myfile.close();
  return 0;
}

[weaknessforcats]

To append to the existing file:

myfile.open ("example.txt", std::ofstream::app);
 

All this does is position the file to the end instead of the beginning (which is the default).

The are several open mode flags. I would look them up and get familiar with what is possible.

If you run the program several times, example.txt should contain all the data all the runs of the program.

[aravind12345]

Thanks you have solved my problem THANKS !!!