Driver program
public static void Main ( ) { if ( isKeith ( 14 ) ) Console . WriteLine ( " Yes " ) ; else Console . WriteLine ( " No " ) ; if ( isKeith ( 12 ) ) Console . WriteLine ( " Yes " ) ; else Console . WriteLine ( " No " ) ; if ( isKeith ( 197 ) ) Console . WriteLine ( " Yes " ) ; else Console . WriteLine ( " No " ) ; } }