C++ (Cpp) Fstream::open Examples

Programming Language: C++ (Cpp)

Class/Type: Fstream

Method/Function: open

Examples at hotexamples.com: 2

Cpp fstream is a library that comes with C++ to enable working with files. It provides functions that allow you to read and write files as well as modify their content. It is part of the standard I/O library and is often used in C++ programming projects that involve file I/O operations.

Here are some code examples:

#include
#include
using namespace std;

int main(){
    //create file stream object
    fstream file;

    //open file in read-only mode
    file.open("example.txt", ios::in);

    //check if the file is open
    if(!file.is_open()){
        cout<<"Unable to open file"<
This code uses the fstream object to open a file in read-only mode. It then reads the file line by line and prints each line to the console. The ios::in parameter is used to specify that the file should be opened in read-only mode.

Here's another example:
#include
#include
using namespace std;

int main(){
    //create file stream object
    fstream file;

    //open file in write mode
    file.open("example.txt", ios::out);

    //check if the file is open
    if(!file.is_open()){
        cout<<"Unable to open file"<

This code opens a file in write mode using the fstream object. It then writes a string to the file and closes it. The ios::out parameter is used to specify that the file should be opened in write mode.

The fstream library is part of the C++ standard library and does not require any additional package installation.

C++ (Cpp) Fstream::open - 2 examples found. These are the top rated real world C++ (Cpp) examples of Fstream::open extracted from open source projects. You can rate examples to help us improve the quality of examples.

Frequently Used Methods

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eof(2)

fail(2)

good(2)

open(2)

is_open(1)

Example #1

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static void stream_do_open(Fstream& s,
                           const fs::path& path,
                           const std::ios_base::openmode mode,
                           typename boost::enable_if<is_std_fstream<Fstream> >::type* = 0)
{
	string file(path.external_file_string());
	s.open(file.c_str(), mode);
}

Example #2

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static void stream_do_open(Fstream& s,
                           const Path& path,
                           const std::ios_base::openmode mode,
                           typename boost::enable_if<fs::is_basic_path<Path> >::type* = 0,
                           typename boost::enable_if<is_fs_fstream<Fstream> >::type* = 0)
{
	s.open(path, mode);
}