<SOLVED> ios::app, or ios::out clearing file data?

Question

Consider a file 'new.txt' with these contents

0
Hello

then I run this code(c++):

fstream file("new.txt",ios::out);
file<<1;
file.close();
file.open("new.txt,ios::app|ios::out);
file<<"\nBye";

Since I'm using ios::app mode I should be writing to the end of the file. So after I run the code it should be:

1
Hello
Bye

But instead that's what happens:

1
Bye

I have tryed other methods too to write to the end of the file like

file.clear();
file.seekg(ios::end);

But nothing works as it should... Any suggestions?

Answer 1

Aren't you implicitly truncating the file with the first open?

Answer 2

Dennis Yeah i figured it out after a lot of testing. I didn't know that ios::out had these consiquencies. Thank you