易百教程

using System;
using System.Collections.Generic;
using System.Text;

namespace Demo {
   class toBinary {
      static void Main(string[] args) {
         int val = 1010, myBinary, remainder;
         int myDecimal = 0, baseVal = 1;

         myBinary = val;
         while (val > 0) {
            remainder = val % 10;
            myDecimal = myDecimal + remainder * baseVal;
            val = val / 10;
            baseVal = baseVal * 2;
         }

         Console.Write("Binary Number : " + myBinary);
         Console.Write("\nConverted to Decimal: " + myDecimal);
         Console.ReadLine();
      }
   }
}