MCQs
Total Questions : 10
Answer: Option D. -> all of the mentioned
The derived class inherit everything from the base class except the given things.
Answer: Option C. -> same as class
None.
Answer: Option D. -> multiple
There can be multiple constructors of the same class, provided they have different signatures.
Answer: Option C. -> 3
There are three types of constructor in C++. They are Default constructor, Parameterized
constructor, Copy constructor.
Answer: Option A. -> class contains objects of other class types as its members
None.
Question 6.
1.
#include
2.
using namespace std;
3.
class poly
4.
{
5.
protected:
6.
int width, height;
7.
public:
8.
void set_values(int a, int b)
9.
{
10.
width = a; height = b;
11.
}
12.
};
13.
class Coutput
14.
{
15.
public:
16.
void output(int i);
17.
};
18.
void Coutput::output(int i)
19.
{
20.
cout
What is the output of this program?
1.
#include
2.
using namespace std;
3.
class poly
4.
{
5.
protected:
6.
int width, height;
7.
public:
8.
void set_values(int a, int b)
9.
{
10.
width = a; height = b;
11.
}
12.
};
13.
class Coutput
14.
{
15.
public:
16.
void output(int i);
17.
};
18.
void Coutput::output(int i)
19.
{
20.
cout
Answer: Option B. -> 1210
In this program, We are calculating the area of rectangle and
triangle by using multilevel inheritance.
$ g++ class1.cpp
$ a.out
1210
Answer: Option D. -> 5
There are five types of inheritance in c++. They are single, Multiple, Hierarchical, Multilevel, Hybrid.
Question 8.
1.
#include
2.
using namespace std;
3.
class stu
4.
{
5.
protected:
6.
int rno;
7.
public:
8.
void get_no(int a)
9.
{
10.
rno = a;
11.
}
12.
void put_no(void)
13.
{
14.
}
15.
};
16.
class test:public stu
17.
{
18.
protected:
19.
float part1,part2;
20.
public:
21.
void get_mark(float x, float y)
22.
{
23.
part1 = x;
24.
part2 = y;
25.
}
26.
void put_marks()
27.
{
28.
}
29.
};
30.
class sports
31.
{
32.
protected:
33.
float score;
34.
public:
35.
void getscore(float s)
36.
{
37.
score = s;
38.
}
39.
void putscore(void)
40.
{
41.
}
42.
};
43.
class result: public test, public sports
44.
{
45.
float total;
46.
public:
47.
void display(void);
48.
};
49.
void result::display(void)
50.
{
51.
total = part1 + part2 + score;
52.
put_no();
53.
put_marks();
54.
putscore();
55.
cout
What is the output of this program?
1.
#include
2.
using namespace std;
3.
class stu
4.
{
5.
protected:
6.
int rno;
7.
public:
8.
void get_no(int a)
9.
{
10.
rno = a;
11.
}
12.
void put_no(void)
13.
{
14.
}
15.
};
16.
class test:public stu
17.
{
18.
protected:
19.
float part1,part2;
20.
public:
21.
void get_mark(float x, float y)
22.
{
23.
part1 = x;
24.
part2 = y;
25.
}
26.
void put_marks()
27.
{
28.
}
29.
};
30.
class sports
31.
{
32.
protected:
33.
float score;
34.
public:
35.
void getscore(float s)
36.
{
37.
score = s;
38.
}
39.
void putscore(void)
40.
{
41.
}
42.
};
43.
class result: public test, public sports
44.
{
45.
float total;
46.
public:
47.
void display(void);
48.
};
49.
void result::display(void)
50.
{
51.
total = part1 + part2 + score;
52.
put_no();
53.
put_marks();
54.
putscore();
55.
cout
Answer: Option A. -> 66.5
In this program, We are passing the values by using different
methods and totaling the marks to get the result.
Output:
$ g++ class.cpp
$ a.out
Total Score=66.5
Answer: Option B. -> 2
There are two kinds of classes in c++. They are absolute class and concrete class.
Answer: Option A. -> class having many forms
Polymirphism is literally means class having many forms.
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