So, when we are done with the operations on the above file myfile, we can close the file as follows: myfile.close() We can use the close function to close a file and release the resources held by the file when we are done with the input and output operations on a file.įunction to close a file is: void close() So, if we do not specify the second parameter in the open function, depending on the stream class used, the file is opened with the default mode. We can also specify a combination of these modes using the OR operator. Mode => Optional parameter indicating the mode in which the file is to be opened.Ĭ++ supports various modes in which the file can be opened. The general syntax to open a file with the stream is: void open(const char* filename, ios::open mode mode)įilename => The string containing path and name of the file to be opened. Thus any reading/writing operation performed on this stream object will be applied to the physical file as well.
#DIFFERENCE BETWEEN ISTREAM AND IFSTREAM CODE#
An open file is represented in code by using this stream object. Let us see each of these operations in detail!! Open A FileĪssociating object of one of the stream classes to a file either for reading or writing or both is called opening a file. The following operations are supported, in C++ File Handling: It can be used to read from and write to a file. Fstream: File handling class that has the ability to handle both ifstream and ofstream.Ifstream: File handling class that signifies the input file stream and is used for reading data from the file.
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