Driver code
public static void Main ( ) { int [ ] arr = { 0 , 10 , 2 , - 10 , - 20 } ; int arr_size = arr . Length ; int missing = findMissing ( arr , arr_size ) ; Console . WriteLine ( " The ▁ smallest ▁ positive ▁ missing ▁ number ▁ is ▁ " + missing ) ; } }