loop issue

[technologist]

When I run this in my Eclipse IDE it goes into an infinite loop printing nothing. If I run it in c++ shell on line, it performs what it is directed to do (output infinite 'jj's. Have missed something simple here, or am I out of for while loops?

shell:http://cpp.sh/

#include<iostream>
int main()  
{	bool yes_loop = 1;

		while (yes_loop == 1)
		{
			std::cout<<"jj";
		}

	return 0;
}

[helios]

The execution environment may buffer output per line, so it's possible for nothing to get printed until the next newline.
You can request the buffers to flush with << std::flush

[technologist]

std flush didn't work:

#include<iostream>

int main()
{
	int yes_loop = 1;

		while (yes_loop == 1)
		{
			std::cout<<"jj"<<std::flush;
		}

	return 0;
}

However, I read ths line:

Also note that inserting std::endl will also flush after writing a newline.

By ending an <<endl;

This works! But I can't use the loop while without endl. Strange.

#include<iostream>

int main()
{
	int yes_loop = 1;

		while (yes_loop == 1)
		{
			std::cout<<"jj"<<std::endl;
		}

	return 0;
}

output:
jj
jj
jj
jj
jj
jj
...as you might imagine

[JLBorges]

It's an old bug (status 'WONTFIX' for nine years and counting) in eclipse on windows.
std::cout << "jj" << std::flush ; won't flush without a new line ( std::cout << "jj\n" << std::flush ; )

Eclipse console does not show output on Windows

In Eclipse CDT on Windows, standard output of the program being run or debugged is fully buffered, because it is not connected to a Windows console, but to a pipe.
http://wiki.eclipse.org/CDT/User/FAQ#Eclipse_console_does_not_show_output_on_Windows