A reference variable is just like pointer with few differences. It is declared using & operator. A reference variable must always be initialized. The reference variable once defined to refer to a variable can’t be changed to point to other variable. You can't create an array of references the way it is possible with pointer.
Which of the things does not require instantiation? a) functions b) non virtual member function c) member class d) all of the mentioned
Which keyword can be used in template? a) class b) typename c) both a & b d) function
What is the output of this program?
#include <iostream>
using namespace std;
template <class T, int N>
class mysequence
{
T memblock [N];
public
void setmember (int x, T value);
T getmember (int x);
};
template <class T, int N>
void mysequence<T,N> setmember (int x, T value)
{
memblock[x] = value;
}
template <class T, int N>
T mysequence<T,N> getmember (int x)
{
return memblock[x];
}
int main ()
{
mysequence <int, 5> myints;
mysequence <double, 5> myfloats;
myints.setmember (0, 100);
myfloats.setmember (3, 3.1416);
cout << myints.getmember(0) << 'n';
cout << myfloats.getmember(3) << 'n';
return 0;
}
a) 100
b) 3.1416
c) 100
3.1416
d) none of the mentionedWhat is the output of this program?
#include <iostream>
using namespace std;
template <class T>
T max (T a, T b)
{
return (a>b?ab);
}
int main ()
{
int i = 5, j = 6, k;
long l = 10, m = 5, n;
k = max(i, j);
n = max(l, m);
cout << k << endl;
cout << n << endl;
return 0;
}
a) 6
b) 6
10
c) 5
10
d) 6
5What is the output of this program?
#include <iostream>
using namespace std;
template <class type>
class Test
{
public
Test()
{
};
~Test()
{
};
type Funct1(type Var1)
{
return Var1;
}
type Funct2(type Var2)
{
return Var2;
}
};
int main()
{
Test<int> Var1;
Test<double> Var2;
cout << Var1.Funct1(200);
cout << Var2.Funct2(3.123);
return 0;
}
a) 100
b) 200
c) 3.123
d) 200 3.123Can you please explain the difference between a template class and class template?
What is meant by template parameter? a) It can be used to pass a type as argument b) It can be used to evaluate a type. c) It can of no return type d) None of the mentioned
Which parameter is legal for non-type template? a) pointer to member b) object c) class d) none of the mentioned
Why we use template-template parameter? a) binding b) rebinding c) both a & b d) none of these
What is the output of this program?
#include <iostream>
using namespace std;
template <typename T, int count>
void loopIt(T x)
{
T val[count];
for(int ii = 0; ii < count; ii++)
{
val[ii] = x++;
cout << val[ii] << endl;
}
};
int main()
{
float xx = 2.1;
loopIt<float, 3>(xx);
}
a) 2.1
b) 3.1
c) 4.1
d) 2.1
3.1
4.1
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