c++ – Differences between using the std :: endl function and a carriage return \ n

Question:

I have a question with the endl function of the stream handler.

According to the book I'm reading (Deitel), endl the output buffer.

What does this mean? Since if I put "\n" or std::endl at the end of cout I get the same output.

Is there any way I can see the difference?

Answer:

endl is used to generate endl :

Is there a way to see the difference? To answer your question I leave you an example:

#include <iostream>
using namespace std;

int main() {
    // your code goes here
    std::cout<<"hola1" << std::endl; 
    std::cout<<"hola2" << std::endl; 

    std::cout<<"hola3"; 
    std::cout<<"hola4"; 
    return 0;
}

the result will be:

hola1
hola2
hola3hola4

hola3 that for hola3 and hola4 did not use endl

endl has the same result as \ n, the only difference is that std::endl empties the output buffer, and '\ n' does not, that is, if you want to force an output. use endl

the same example but with \n :

#include <iostream>
    using namespace std;

    int main() {
        // your code goes here
        std::cout<<"hola1\n"; 
        std::cout<<"hola2\n"; 

        std::cout<<"hola3"; 
        std::cout<<"hola4"; 
        return 0;
    }