What is the output of this program?
1.
#include
2.
using namespace std;
3.
int operate (int a, int b)
4.
{
5.
return (a * b);
6.
}
7.
float operate (float a, float b)
8.
{
9.
return (a / b);
10.
}
11.
int main ()
12.
{
13.
int x = 5, y = 2;
14.
float n = 5.0, m = 2.0;
15.
cout << operate (x, y);
16.
cout << operate (n, m);
17.
return 0;
18.
}
In which form does the function call operator can be overloaded?
What is the output of this program?
1.
#include
2.
#include
3.
using namespace std;
4.
class Complex
5.
{
6.
private:
7.
float real;
8.
float imag;
9.
public:
10.
Complex():real(0), imag(0){}
11.
Complex operator ()(float re, float im)
12.
{
13.
real += re;
14.
imag += im;
15.
return *this;
16.
}
17.
Complex operator() (float re)
18.
{
19.
real += re;
20.
return *this;
21.
}
22.
void display()
23.
{
24.
cout << "(" << real << "," << imag << ")" << endl;
25.
}
26.
};
27.
int main()
28.
{
29.
Complex c1, c2;
30.
c2 = c1(3.2, 5.3);
31.
c1(6.5, 2.7);
32.
c2(1.9);
33.
cout << "c2=";c1.display();
34.
cout << "c2=";c2.display();
35.
return 0;
36.
}
a) c2=(9.7,8)
c2=(5.1,5.3)
b) c2=(9,8)
c2=(5,5)
c) c2=(4.7,8)
c2=(2.1,5.3)
d) none of the mentioned
What is the output of this program?
1.
#include
2.
using namespace std;
3.
class three_d
4.
{
5.
int x, y, z;
6.
public:
7.
three_d() { x = y = z = 0; }
8.
three_d(int i, int j, int k) { x = i; y = j; z = k; }
9.
three_d operator()(three_d obj);
10.
three_d operator()(int a, int b, int c);
11.
friend ostream &operator<<(ostream &strm,
three_d op);
12.
};
13.
three_d three_d::operator()(three_d obj)
14.
{
15.
three_d temp;
16.
temp.x = (x + obj.x) / 2;
17.
temp.y = (y + obj.y) / 2;
18.
temp.z = (z + obj.z) / 2;
19.
return temp;
20.
}
21.
three_d three_d::operator()(int a, int b, int c)
22.
{
23.
three_d temp;
24.
temp.x = x + a;
25.
temp.y = y + b;
26.
temp.z = z + c;
27.
return temp;
28.
}
29.
ostream &operator<<(ostream &strm, three_d op) {
30.
strm << op.x << ", " << op.y << ", " << op.z << endl;
31.
return strm;
32.
}
33.
int main()
34.
{
35.
three_d objA(1, 2, 3), objB(10, 10, 10), objC;
36.
objC = objA(objB(100, 200, 300));
37.
cout << objC;
38.
return 0;
39.
}
What is the output of this program?
1.
#include
2.
using namespace std;
3.
void duplicate (int& a, int& b, int& c)
4.
{
5.
a *= 2;
6.
b *= 2;
7.
c *= 2;
8.
}
9.
int main ()
10.
{
11.
int x = 1, y = 3, z = 7;
12.
duplicate (x, y, z);
13.
cout << x << y << z;
14.
return 0;
15.
}
)