Substring outofindex

Question

I wrote a code for which

if 23E+20 is the input then output should be 230000000(20 zeros)

if 4.456E-14 is the input then 4.456000(14 zeros) should be the output

But its not working properly. Please let me know where I did error. Thank You.


using System;

class test

{

public static void Main()

{

Console.WriteLine("Enter double");

      String ext =Console.ReadLine();



           if(ext.IndexOf("E")!=-1)
        {
           int i=ext.IndexOf("E");

          ext = ext.Substring(0, i);

          for (int j = 0; j < int.Parse(ext.Substring(i + 1, ext.Length - (i + 1))); j++)

          ext = ext + "0";         

          Console.WriteLine(ext);



      }

}

Kirtan Patel · Answer

Here I Wrote your Complete Program to Achieve what you wanted !! using System.Text.RegularExpressions; namespace ConsoleApplication2 { class Program { static void Main( string [] args) { Console .WriteLine( Enter Number : ); string Input = Console .ReadLine(); string [] SplitString; string FinalOutput =  ; if (Input.Contains( '+' ) == true ) { SplitString = Input.Split( '+' ); Regex rex = new Regex ( [0-9.]* ); Match m = rex.Match(SplitString[0]); FinalOutput = m.Value.ToString(); int NumberofZero = int .Parse(SplitString[1]); for ( int i = 0; i { FinalOutput += 0 ; } //Show Output Console .WriteLine( 
 ************ Output *************** ); Console .WriteLine(FinalOutput); } else if (Input.Contains( '-' ) == true ) { SplitString = Input.Split( '-' ); Regex rex = new Regex ( [0-9.]* ); Match m = rex.Match(SplitString[0]); FinalOutput = m.Value.ToString(); int NumberofZero = int .Parse(SplitString[1]); for ( int i = 0; i { FinalOutput += 0 ; } //Show Output Console .WriteLine( 
 ************ Output *************** ); Console .WriteLine(FinalOutput); } Console .ReadLine(); } } }

Rujuta · Answer

using System ; class test { public static void Main () { Console . WriteLine ( Enter double ); String ext = Console . ReadLine (); if ( ext . IndexOf ( E )!=- 1 ) { int i = ext . IndexOf ( E ); ext = ext . Substring ( 0  i ); for ( int j = 0 ; j int . Parse ( ext . Substring ( i + 1  ext . Length - ( i + 1 ))); j ++) ext = ext + 0 ; Console . WriteLine ( ext ); } } ext=ext.Substring(0i) will overwrite the actual string. That is ext is now the chars coming before the letter E and not the original string. Take another string instance to store both the substrings.

Rujuta · Answer

using System ; class test { public static void Main () { Console . WriteLine ( Enter double ); String ext = Console . ReadLine (); if ( ext . IndexOf ( E )!=- 1 ) { int i = ext . IndexOf ( E ); ext = ext . Substring ( 0  i ); for ( int j = 0 ; j int . Parse ( ext . Substring ( i + 1  ext . Length - ( i + 1 ))); j ++) ext = ext + 0 ; Console . WriteLine ( ext ); } } ext=ext.Substring(0i) will overwrite the actual string. That is ext is now the chars coming before the letter E and not the original string. Take another string instance to store both the substrings.