#include <iostream>

class foo
{
	int x;
	
	public:
	foo( int x ):x(x)
	{}

private: foo(foo const&);
};

int main()
{
	foo obj = 10;
}

In function 'int main()':
Line 11: error: 'foo::foo(const foo&)' is private
compilation terminated due to -Wfatal-errors.