C++ endl Explained: New Line & Stream Flush

In C++, endl is an output stream operator used to insert a new line character and flush the output stream, performing both a new line and flush operation. When using endl to end a line output, the data in the buffer is immediately output and moves to the next line for continued output. Compared to using ‘\n’, endl not only outputs a new line character but also flushes the output buffer to ensure data is immediately displayed on the screen.