Which symbol is used to create a pure virtual function?

Which of the following is an abstract data type?

Consider the Boolean expression Y = A'.B'C' + A'.B'.C + A'.B.C + A'.B.C'. Minimize the expression.

 Which of the following provides a programmer with the facility of using object of a class inside other classes? 

What will be the output of the following C code?

1. #include
2. int main()
3. {
4.       signed char ch;
5.       ch = 128;
6.       printf("%d\n", ch);
7.       return 0;
8. }

  What is the output of this C code?

  int main()
    {
   int y = 0;
 if (1 |(y = 1))
            printf("y is %d\n", y);
   else
            printf("%d\n", y);

    } 

#include<stdio.h>
int main()
{
int i=4;
switch(i)
{
case 2+2:printf("Abekus");
break;
case 1+3:printf("learning");
break;
default:printf("Abekuslearning")
}
return 0;
}

Pattern matching in C refers to:

 Which of the following is correct?

What will be the output of the following C++ code?

#include <iostream>

#include <set>

using namespace std;

int main()

{

       set<int> tst;

       tst.insert(12);

       tst.insert(21);

       tst.insert(32);

       tst.insert(31);

       set<int>::const_iterator pos;

       for (pos = tst.begin(); pos != tst.end(); ++pos)

           cout << *pos << ' ';

       return 0;

}