Rest of the two digit numbers i . e . , 21 to 99
else { int i = ( num [ x ] - '0' ) ; if ( i > 0 ) Console . Write ( tens_multiple [ i ] + " ▁ " ) ; else Console . Write ( " " ) ; ++ x ; if ( num [ x ] - '0' != 0 ) Console . WriteLine ( single_digits [ num [ x ] - '0' ] ) ; } } ++ x ; } }