Replacing the characters to get all Vowels
for ( int i = 0 ; i < length ; i ++ ) { if ( find ( x , x + 5 , str [ i ] ) != x + 5 and find ( y . begin ( ) , y . end ( ) , str [ i ] ) == y . end ( ) ) y . push_back ( str [ i ] ) ; else { str [ i ] = z [ cc ] ; cc ++ ; } if ( cc == z . size ( ) ) break ;