Driver code
public static void Main ( string [ ] args ) { string str = " geeksforgeeks " ; int l = 102 , r = 111 ; Console . Write ( " Characters ▁ with ▁ ASCII ▁ values " + " not ▁ in ▁ the ▁ range ▁ [ l , ▁ r ] ▁ STRNEWLINE in " + " the ▁ given ▁ string ▁ are : ▁ " ) ; Console . WriteLine ( " and count is " CountCharacters ( str , l , r ) ) ; } }