#include
using namespace std;
int main()
{
char ch;
for(int i = 0 ; i < 10; i++) {
ch = 'A' + i;
// This statement turns on the 6th bit.
cout << ch << " " ;
ch = ch | 32;
cout << ch << "\n";
}
return 0;
}
A a
B b
C c
D d
E e
F f
G g
H h
I i
J j