parse decimal
using System; public class Class1 { public static void Main(string[] args) { Console.Write("Enter principal:"); string sPrincipal = Console.ReadLine(); decimal mPrincipal = decimal.Parse(sPrincipal); Console.Write("Enter interest:"); string sInterest = Console.ReadLine(); decimal mInterest = decimal.Parse(sInterest); decimal mInterestPaid; mInterestPaid = mPrincipal * (mInterest / 100); decimal mTotal = mPrincipal + mInterestPaid; Console.WriteLine("Principal = " + mPrincipal); Console.WriteLine("Interest = " + mInterest + "%"); Console.WriteLine("Interest paid = " + mInterestPaid); Console.WriteLine("Total = " + mTotal); } }