Private: int perm; std:: string name; Suppose you have a class student with priv

Question

Private: int perm; std:: string name; Suppose you have a class student with private data members as shown in the box at right. You could write a constructor like this: Student::Student(int thePerm, std::string theName) {perm = thePerm; name = theName;} However, there is an alternate way to initialize data members in the so called "constructor initialization section" described in Section 10.2 of PS9. Rewrite this constructor so that the body is an empty set of braces, and the code is moved to the so-called "constructor initialization section".

Explanation / Answer

//EXAMPLE PROGRAM FOR VIRTUAL BASE CLASS
# include <iostream.h>
# include <conio.h>
class student
{
protected:
int roll_number;
public:
void get_number(int a)
{
roll_number=a;
}
void put_number()
{
cout<<"ROLL NUMBER "<<roll_number<<endl;
}
};
class test : virtual public student
{
protected:
float part1,part2;
public:
void get_marks(float x,float y)
{
part1=x;
part2=y;
}
void put_marks()
{
cout<<"MARKS OBTAINED "<<endl;
cout<<"PART1 = "<<part1<<endl;
cout<<"PART2 = "<<part2<<endl;
}
};
class sports : public virtual student
{
protected:
float score;
public:
void get_score(float s)
{
score=s;
}
void put_score()
{
cout<<"SPORTS MARKS "<<score<<endl;
}
};
class result : public test, public sports
{
float total;
public:
void display()
{
total=part1+part2+score;
put_number();
put_marks();
put_score();
cout<<"TOTAL SCORE "<<total<<endl;
}
};
void main()
{
result s1;
clrscr();
s1.get_number(76);
s1.get_marks(67,78);
s1.get_score(70);
s1.display();
getch();
}

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