Writing a string to the end of a file (C++)

Question

I have a program already formed that has a string that I want to stream to the end of an existing text file. All of what little I have is this: (C++)

 void main(         


        

Answer 1

I hope that isn't your whole code because if it is, there's lots of things wrong with it.

The way you would write out to a file looks something like this:

#include 
#include 

// main is never void
int main()
{
    std::string message = "Hello world!";

    // std::ios::out gives us an output filestream
    // and std::ios::app appends to the file.
    std::fstream file("myfile.txt", std::ios::out | std::ios::app);
    file << message << std::endl;
    file.close();

    return 0;
}