driver program
public static void Main ( ) { int x = 5 ; if ( isLucky ( x ) ) Console . Write ( x + " ▁ is ▁ a ▁ " + " lucky ▁ no . " ) ; else Console . Write ( x + " ▁ is ▁ not " + " ▁ a ▁ lucky ▁ no . " ) ; } }