Take a look at the following code:
#include int main(){ int i = 12; std::cout << i << '
'; // A std::cout << i << std::endl; // B return 0;} Using '
' is a request to output a newline. Likewise, using endl requests to output a newline, but it also flushes the output stream. In other words, endl has the same effect as (ignoring the std:: for now):
cout << i << '
'; // C: Emit newlinecout.flush(); // Then flush directly Or this:
cout << i << '
' << flush; // D: use flush manipulator It's worth pointing out that these are different too:
cout << i << '
'; // E: with single quotescout << i << "
"; // F: with double quotes Note that Es last output request is for a char, hence operator Fs case, the last is a const char[2], and so operator
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