Win32:Token-Pasting Operator (##)
#define paster( n ) printf_s( "token" #n " = %d", token##n ) int token9 = 9;
If a macro is called with a numeric argument like
paster( 9 );
the macro yields
printf_s( "token" "9" " = %d", token9 );
which becomes
printf_s( "token9 = %d", token9 );