cout vs endl in C++

In C++, both count << endl and count << "\n" are used to insert a new line in the output. But they have an important difference:

COUT << ENDL;

Following are the important point of count << endl;

• Inserts a newline character (\n) and flushes the output buffer.
• Flushing means it forces all output to be written immediately.
• Slower than "\n" in performance-critical situations due to flushing.
• Useful when you want to make sure output appears immediately (e.g., debugging, console logs).

Let's see syntax of the count << endl ?

cout << "tutorialspoint" << endl;

COUT << "\n";

Following are the important point of count << "\n";

• Inserts only a newline character, without flushing the output buffer.
• Faster and preferred when flushing is unnecessary.
• More suitable in performance-sensitive code like competitive programming.

Let's see syntax of the count << "\n" ?

cout << "tutorialspoint \n";

Which One Should be Used?

Use "\n" for better performance in competitive programming. Otherwise, use endl to flush the output and help with debugging.