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File Opening Modes, , In c++ File can be open in different, mode to perform read and write, operation on a file.open() function is, used to open a file,open function takes, two arguments., , open(const char *filename,, ios::openmode mode);, , Different file opening mode is given, below, , S.No. |Mode_ Description, 1. ios :: in (Open a file for reading, , ios :: at, 2. out Open a file for writing, 3 ios:: _|Appends data to the end of the, ‘ app file, , ios * File pointer moves to the end of, 4. “ithe file but allows to writes data, ate . ,, in any location in the file