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PONumber addition and subtraction in c++ classes
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  1. PONumber addition and subtraction in c++ classes
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    copied!<p>Ok, so I'm trying to get my program work, and it seems like something is wrong, but I don't know why. Could you guys please look at it and tell me whats wrong?</p> <p>The problem is: Subtracting won't work properly :c</p> <p>Here's code for Main function (NumberProject.cpp):</p> <pre><code>// NumberProject.cpp : Defines the entry point for the console application. #include "stdafx.h" #include &lt;iostream&gt; #include "Number.h" using namespace std; int main( ) { // Variable and Object Declarations char answer; bool goAgain = true; int integerValue; Number numberA; // Invoke the default constructor. Number numberB; // Invoke the default constructor. // User loop while ( goAgain ) { cout &lt;&lt; "Enter an integer: "; cin &gt;&gt; integerValue; numberA.Set( integerValue ); cout &lt;&lt; "Enter an integer: "; cin &gt;&gt; integerValue; numberB.Set( integerValue ); cout &lt;&lt; endl; // Addition numberA.Add( numberB ); cout &lt;&lt; "Addition: "; numberA.Output( ); // Subtraction numberA.Subtract( numberB ); cout &lt;&lt; "Subtraction: "; numberB.Output( ); // User loop termination code. cout &lt;&lt; "Would you like to continue? (y/n)" &lt;&lt; endl; cin &gt;&gt; answer; if ( answer == 'n' ) goAgain = false; } // while return 0; } // Function main( ) </code></pre> <p>Number.cpp (class):</p> <pre><code>#include "StdAfx.h" #include "math.h" // Needed for sqrt and pow. #include &lt;string&gt; #include &lt;iostream&gt; #include "Number.h" using namespace std; Number::Number( void ) { number = 0; } Number::Number( int integerValue ) { number = integerValue; } Number::~Number( void ) { } int Number::Get( ) { return number; } void Number::Set( int integerValue ) { number = integerValue; } void Number::Output( ) { cout &lt;&lt; number &lt;&lt; endl; cout &lt;&lt; endl; } void Number::Add( Number otherNumber ) { number = number + otherNumber.Get(); } void Number::Subtract( Number otherNumber ) { number = number - otherNumber.Get(); } </code></pre> <p>Number.h:</p> <pre><code>#pragma once class Number { public: Number( void ); Number( int ); ~Number( void ); int Number::Get( ); // Accessor void Number::Set( int ); // Mutator void Number::Output(); void Number::Add( Number ); void Number::Subtract( Number ); private: int number; }; // Class Number </code></pre>
 

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