What is the purpose of `std::endl`?

std::endl is used in C++ to insert a newline character into the output stream and flush the output buffer. Here are its main purposes:

Key Features:

1. Newline Character: It creates a line break in the output, moving the cursor to the next line.
2. Flush Output Buffer: It forces the output buffer to flush, ensuring that all output is written to the console immediately. This is useful for real-time output, especially in interactive applications.

Example:

#include <iostream>

int main() {
    std::cout << "Hello, World!" << std::endl; // Outputs text and moves to the next line
    return 0;
}

Considerations:

• While std::endl is useful for flushing the buffer, it can be slower than using the newline character \n because of the flushing behavior. If you don't need immediate output, using \n may be more efficient.

If you have more questions or need further clarification, feel free to ask!