C++ ほんとに分からん https://goodliffe.blogspot.com/2011/04/code-gibberish.html

main.cpp

using namespace std;

int main()
{
	int x = 255;

	cout << setw(10) << setfill('0') << showbase << hex;
	cout << x << endl;
	cout << x << endl;
	cout << setw(10) << x << endl;

	cout << endl;

	cout << setw(10) << setfill('0') << internal << showbase << hex;
	cout << x << endl;
	cout << x << endl;
	cout << setw(10) << x << endl;

	return 0;
}

実行結果はこうなる...

0000000xff
0xff
0000000xff

0x000000ff
0xff
0x000000ff