text: Find most significant bit of a number X in base Y | C # Program to find the first digit of X in base Y ; Function to find the first digit of X in base Y ; calculating number of digits of x in base y ; finding first digit of x in base y ; Driver code
code: using System ; class GFG { static void first_digit ( int x , int y ) { int length = ( int ) ( Math . Log ( x ) / Math . Log ( y ) + 1 ) ; int first_digit = ( int ) ( x / Math . Pow ( y , length - 1 ) ) ; Console . Write ( first_digit ) ; } public static void Main ( ) { int X = 55 , Y = 3 ; first_digit ( X , Y ) ; } }