Opening Files in C++:             Before reading data from or writing data into a file, the file must he opened. It is opened by creating objects of ifstream, ofstream or fstream stream classes.             A file is opened for output for writing data into it and it is also opened for input for reading data from it. Similarly, a file can also be opened for both input and output... 

Streams and Files:             Stream is a general term. It refers to flow of data from a source to a destination. The process of inputting data from the source is known as reading, extracting, getting or fetching. The process of outputting data to the destination is known as writing, inserting, putting or storing.             In C++ special classes known as stream classes are... 

Data Files in C++ The input was given from the keyboard and the output was received on the computer screen. This method works well when input and output are not many and are small. But when the input becomes large, it is not possible to enter data from the keyboard. If there is a mistake in entering data, all data will have to be entered again. Similarly, if the output is large, it is necessary to...