problem with incrementing

[artofsubtraction]

Hello!
I have to learn C++ as part of my programming class, so my question today is how to deal with a certain exercise.
I am a very beginner and I am aware of the fact that I make very basic mistakes, so please don't yell at me - I'm willing to learn.
oh, and by the way I'm not a native speaker, formulations might be a little off!

So, the exercise was to have a variable count upwards by one (up to 1000) and to have them in one line up to the number 8, then a new line the numbers from 8 to 16, a new line with the numbers from 16 to 24, and so on.

So what I did is, that I made the variable count upwards by one (x++) and then I tried to build an if-function that calculates if a division of x/8 has a remainder. And if not, so if r==0, i want a newline token to be inserted.

So the code I have now is the following:

  #include <iostream>
#include <cstdlib>
#include <iomanip>

using namespace std;


int main ()
{
	int x=1;
	
	
	while (x<=10)
	{
		
		cout << x << '\t';
		x++;
		
		
	int division(int x)
	{	int r;
		r=x & 8;
		if (r==0)
			return cout << '\n' ;
	}

	}
	
	return EXIT_SUCCESS;
}

note= as "up to 1000" was too much for me in the beginning and my compiler only showed the numbers back to 700 i reduced the number the variable should count up to to 10.

The compiler now states: In function 'int main()': error: a function-definition is not allowed here before '{' token
{ int r;
^


I dont really understands what that means and what the problem is.
Thank you very much for your help and advice in advance!

[Peter87]

Line 20-25 is a function definition.
A function named division that takes an int as argument and returns an int.
The reason you get an error message is because you are not allowed to define a function inside another function.
Also note that & is the bitwise AND operator. If you want the remainder you should instead use the % operator.