Driver code
public static void Main ( ) { string str = " geeksforgeeks " ; int l = 102 , r = 111 ; Console . Write ( " Characters ▁ with ▁ ASCII ▁ values " + " ▁ in ▁ the ▁ range ▁ [ l , ▁ r ] ▁ are ▁ STRNEWLINE " ) ; Console . Write ( " and count is " CountCharacters ( str , l , r ) ) ; } }