Calculator VC++_2005






1.43/5 (10 votes)
Jun 10, 2007

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A simple calculator based on inheritance class

Introduction
A simple calculator with managed visual c++ in studio 2005.
Background
Using the code
I used a class for items(item.h) . In this class are stored the two number into property and the result:
// property double nr1; property double nr2; //
The operations like :asin,cos,power,pi,plu,divide,sqrt etc. are edited into inherited class from items:
// #pragma once #include "Items.h" using namespace System; public ref class asinus : public Items { public: asinus(void) { } double^ asin(double a) { return Math::Asin(a); } }; //
<<>>In the base class i used 6 boolean variable for the precedent operation:
>
bool plus; bool minus; bool produs; bool divide; bool sin; bool prec;
For button equal:
private: System::Void btnegal_Click(System::Object^ sender, System::EventArgs^ e) { prec = false; if(plus == true) { this->txtRes->Text = Convert::ToString(p.aduna(i.nr1,i.nr2)); } else if(minus == true) { this->txtRes->Text = Convert::ToString(m.scadere(i.nr1,i.nr2)); } else if(produs == true) { this->txtRes->Text = Convert::ToString(pr.inmultire(i.nr1,i.nr2)); } else if(divide == true) { this->txtRes->Text = Convert::ToString(d.impartire(i.nr1,i.nr2)); } }
I have a function for operaton click:
private: System::Void Operation_Click(System::Object^ sender, System::EventArgs^ e) { if(prec == false) { i.nr1 = Convert::ToDouble(this->txtRes->Text); } if(prec == true) { i.nr2 = Convert::ToDouble(this->txtRes->Text); } }
History
The first version...keeping for future ...
All ze best for all programmers ...:)
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