⟩ Catch handler can have multiple parameters. a. True b. False
b. False
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What is the output of this program?
#include <iostream>
using namespace std;
class sample
{
int width, height;
public
void set_values (int, int);
int area () {return (width * height);}
friend sample duplicate (sample);
};
void sampleset_values (int a, int b)
{
width = a;
height = b;
}
sample duplicate (sample rectparam)
{
sample rectres;
rectres.width = rectparam.width * 2;
rectres.height = rectparam.height * 2;
return (rectres);
}
int main ()
{
sample rect, rectb;
rect.set_values (2, 3);
rectb = duplicate (rect);
cout << rectb.area();
return 0;
}
a) 20
b) 16
c) 24List the advantages of using friend classes?
What is the output of this program?
#include <iostream>
using namespace std;
class base
{
int val1, val2;
public
int get()
{
val1 = 100;
val2 = 300;
}
friend float mean(base ob);
};
float mean(base ob)
{
return float(ob.val1 + ob.val2) / 2;
}
int main()
{
base obj;
obj.get();
cout << mean(obj);
return 0;
}
a) 200
b) 150
c) 100
d) 300Where does keyword 'friend' should be placed? a) function declaration b) function definition c) main function d) None of the mentioned
What are the C++ friend classes? Explain its uses with an example?
What is the output of this program?
#include <iostream>
using namespace std;
class sample;
class sample1
{
int width, height;
public
int area ()
{
return (width * height);}
void convert (sample a);
};
class sample
{
private
int side;
public
void set_side (int a)
{
side = a;
}
friend class sample1;
};
void sample1convert (sample a)
{
width = a.side;
height = a.side;
}
int main ()
{
sample sqr;
sample1 rect;
sqr.set_side(6);
rect.convert(sqr);
cout << rect.area();
return 0;
}
a) 24
b) 35
c) 16
d) 36What is output of this program?
#include <iostream>
using namespace std;
class sample
{
private
int a, b;
public
void test()
{
a = 100;
b = 200;
}
friend int compute(sample e1);
};
int compute(sample e1)
{
return int(e1.a + e1.b) - 5;
}
int main()
{
sample e;
e.test();
cout << compute(e);
return 0;
}
a) 100
b) 200
c) 300
d) 295What is the friend class in C++?
What is the syntax of friend function? a) friend class1 Class2; b) friend class; c) friend class d) None of the mentioned
Pick out the correct statement. a) A friend function may be a member of another class. b) A friend function may not be a member of another class. c) A friend function may or may not be a member of another class. d) None of the mentioned
