You have a file that is not empty, and you want to preserve the contents and append to the end of the file. Give the commands necessary to open a file for appending.

What will be an ideal response?

#include
//. . .
using std::ofstream;
using std::ios;
ofstream outStream;
outStream.open(“myFile.txt”, ios::app);
Explanation: The using declarations of ofstream and ios make these name available. The first argument is the system name of the file to be opened. The second, ios::app, is an optional argument for the open member function that causes the file to be opened with the write position at end of file and causes writes to the file to be appended.