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POOverriding virtual function not working, header files and c++ files
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  1. POOverriding virtual function not working, header files and c++ files
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    copied!<p>We have a parent class called Student. We have a child class: StudentCS.</p> <p>Student.h:</p> <pre><code>#include &lt;iostream.h&gt; #include&lt;string.h&gt; #include&lt;vector.h&gt; #include "Course.h" class Course; class Student { public: Student(); Student(int id, std::string dep, std::string image,int elective); virtual ~Student(); virtual void Study(Course &amp;c) const; // this is the function we have a problem with void setFailed(bool f); [...] }; </code></pre> <p>Student.cpp:</p> <pre><code>#include "Student.h" [...] void Student::Study(Course &amp;c) const { } </code></pre> <p>And we have StudentCS.h:</p> <pre><code>#include "Student.h" class StudentCS : public Student { public: StudentCS(); virtual ~StudentCS(); StudentCS (int id, std::string dep, std::string image,int elective); void Study(Course &amp;c) const; void Print(); }; </code></pre> <p>And StudentCS.cpp:</p> <pre><code>void StudentCS:: Study (Course &amp;c) const{ //25% to not handle the pressure! int r = rand()% 100 + 1; cout &lt;&lt; r &lt;&lt; endl; if (r&lt;25) { cout &lt;&lt; student_id &lt;&lt; " quits course " &lt;&lt; c.getName() &lt;&lt; endl; } } </code></pre> <p>We create student in the main:</p> <pre><code>Student *s; vector &lt;Student&gt; uniStudent; [...] if(dep == "CS") s = new StudentCS(student_id,dep,img,elective_cs); else s = new StudentPG(student_id,dep,img,elective_pg); uniStudent.push_back(*s); </code></pre> <p>Then we call to study, but we get the parent study, and not the child! Please help! </p> <p>The code compiles but when run and called on the uniStudent.Study() it uses the parent and not the child</p>
 

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