Design and build a rational number calculator program. This calculator should re

Question

Design and build a rational number calculator program. This calculator should read the mathematical

expression as an user input and add (+), subtract (-), multiply (*) or divide (/) the rational numbers. The

program should do the calculation using c# operator precedence rule; * and / are perform before + and -. It

also search for the maximum common divider to simplify the result.

The following is a sample run of the program

Input the mathematical expression: 1/3 * 2/4 + 5/9

Output: 1/3 * 2/4 + 5/9 = 78/108 = 13/18

or

Input the mathematical expression 1/2 + 1/4 * 5/3

Explanation / Answer

[Visual Basic] Imports System Public Class SplitTest Public Shared Sub Main() Dim words As String = "this is a list of words, with: a bit of punctuation." Dim split As String() = words.Split(New [Char]() {" "c, ","c, "."c, ":"c}) Dim s As String For Each s In split If s.Trim() "" Then Console.WriteLine(s) End If Next s End Sub 'Main End Class 'SplitTest [C#] using System; public class SplitTest { public static void Main() { string words = "this is a list of words, with: a bit of punctuation."; string [] split = words.Split(new Char [] {' ', ',', '.', ':'}); foreach (string s in split) { if (s.Trim() != "") Console.WriteLine(s); } } } [C++] #using using namespace System; using namespace System::Collections; int main() { String* words = S"this is a list of words, with: a bit of punctuation."; Char chars[] = {' ', ', ', '->', ':'}; String* split[] = words->Split(chars); IEnumerator* myEnum = split->GetEnumerator(); while (myEnum->MoveNext()) { String* s = __try_cast(myEnum->Current); if (!s->Trim()->Equals(S"")) Console::WriteLine(s); } } [JScript] import System; public class SplitTest { public static function Main() : void { var words : String = "this is a list of words, with: a bit of punctuation."; var separators : char[] = [' ', ',', '.', ':']; var split : String [] = words.Split(separators); for (var i : int in split) { var s : String = split[i]; if (s.Trim() != "") Console.WriteLine(s); } } } SplitTest.Main();

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