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POVirtual function not working
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  1. POVirtual function not working
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    copied!<p>The first class is:</p> <pre><code>class SistemPornire{ protected: Motor &amp;_motor; Electromotor &amp;_electromotor; public: SistemPornire(Motor&amp;,Electromotor&amp;); virtual void pornire_motor(); void opreste_motor(); }; </code></pre> <p>The implementation of the virtual function is:</p> <pre><code>SistemPornire::SistemPornire(Motor &amp;motor, Electromotor &amp;electromotor) :_motor(motor), _electromotor(electromotor) { } void SistemPornire::pornire_motor() { std::cout &lt;&lt; "Sistemul de pornire a trimis comanda porneste_motor electromotorului." &lt;&lt; std::endl; this-&gt;_electromotor.start(_motor); } </code></pre> <p>The second class:</p> <pre><code>class SistemPornireCuPreincalzire:public SistemPornire { public: SistemPornireCuPreincalzire(Motor&amp;,Electromotor&amp;); void pornire_motor(); }; </code></pre> <p>Its implementation:</p> <pre><code>SistemPornireCuPreincalzire::SistemPornireCuPreincalzire(Motor&amp;motor, Electromotor&amp;electromotor) : SistemPornire(motor, electromotor) { } void SistemPornireCuPreincalzire::pornire_motor() { std::cout &lt;&lt; "A inceput preincalzirea" &lt;&lt;std::endl&lt;&lt; "Preincalzirea incheiata" &lt;&lt; std::endl; std::cout &lt;&lt; "Sistemul de pornire a trimis comanda porneste_motor electromotorului." &lt;&lt; std::endl; this-&gt;_electromotor.start(_motor); } </code></pre> <p>In the main function I'm trying to call the function <code>pornire_motor()</code> for an object of type <code>SistemPornireCuPreincalzire</code> yet it would print out the message from the <code>SistemPornire::pornire_motor()</code> function.</p> <p>Could you please tell me what is it that I am doing wrong? Is the information I have provided sufficient?</p> <pre><code>class Autoturism { private: Electromotor electromotor; Motor motor; SistemPornire sistem_pornire; SistemDirectie sistem_directie; CutieViteze cutieviteze; public: Autoturism(SistemPornire&amp;, Electromotor&amp;, Motor&amp;, SistemDirectie&amp;); void porneste_autoturism(); void condu_la_destinatie(); void parcheaza_autoturism(); }; Autoturism::Autoturism(SistemPornire &amp;sp, Electromotor&amp;e, Motor&amp;m, SistemDirectie&amp;sd): sistem_pornire(sp), electromotor(e), motor(m), sistem_directie(sd) { } void Autoturism::porneste_autoturism() { std::cout &lt;&lt; "Comanda porneste_autoturism a fost trimisa catre sistemul de pornire." &lt;&lt; std::endl; this-&gt;sistem_pornire.pornire_motor(); } void Autoturism::condu_la_destinatie() { this-&gt;porneste_autoturism(); std::cout &lt;&lt; "Odata ce masina a pornit, soferul o poate conduce la destinatie." &lt;&lt; std::endl; this-&gt;cutieviteze.gearUp(); this-&gt;sistem_directie.stanga(0); this-&gt;cutieviteze.gearUp(); this-&gt;cutieviteze.gearUp(); this-&gt;cutieviteze.gearDown(); this-&gt;sistem_directie.stanga(90); this-&gt;cutieviteze.gearUp(); this-&gt;sistem_directie.stanga(0); this-&gt;cutieviteze.gearDown(); this-&gt;sistem_directie.dreapta(30); this-&gt;sistem_directie.dreapta(0); this-&gt;sistem_directie.dreapta(10); std::cout &lt;&lt; "Odata ce s-a ajuns la destinatie masina e gata de a fi parcata." &lt;&lt; std::endl; this-&gt;parcheaza_autoturism(); std::cout &lt;&lt; "Soferul a ajuns la destinatie." &lt;&lt; std::endl; } void Autoturism::parcheaza_autoturism() { std::cout &lt;&lt; "Comanda parcheaza_autoturism a fost trimisa catre sistemul de pornire." &lt;&lt; std::endl; this-&gt;sistem_pornire.opreste_motor(); } </code></pre> <p>Main function:</p> <pre><code>int main() { Motor motor; Electromotor electromotor; SistemPornire sistempornire(motor, electromotor); SistemDirectie sistemdirectie; SistemPornireCuPreincalzire sistempornireINC(motor, electromotor); Autoturism masina(sistempornireINC, electromotor, motor,sistemdirectie); std::cout &lt;&lt; "Porneste autoturism:" &lt;&lt; std::endl; masina.porneste_autoturism(); std::cout &lt;&lt; "Parcheaza autoturism:" &lt;&lt; std::endl; masina.parcheaza_autoturism(); std::cout &lt;&lt; "Condu la destinatie:" &lt;&lt; std::endl; masina.condu_la_destinatie(); return 0; } </code></pre>
 

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