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

To append contents to the end of files, simply open a file with ofstream (which stands for out file stream) in app mode (which stands for append).

#include 
using namespace std;

int main() {
    ofstream fileOUT("filename.txt", ios::app); // open filename.txt in append mode

    fileOUT << "some stuff" << endl; // append "some stuff" to the end of the file

    fileOUT.close(); // close the file
    return 0;
}