GlobalEdge Placement Paper - C++ Questions

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1. If the variable count exceeds 100, a single statement that prints “Too many” is:

   A: if (count < 100) cout << "Too many";

   B: if (count > 100) cout >> "Too many";

   C: if (count > 100) cout << "Too many";

   D: None of these.

   Ans: C

2. Overloading the function operator:

   A: Requires a class with an overloaded operator.

   B: Requires a class with an overloaded [] operator.

   C: Allows you to create objects that act syntactically like functions.

   D: Usually makes use of a constructor that takes arguments.

   Ans: A

3. In C++, the range of signed integer type variable is:

   A: 0 to 216

   B: -215 to 215 - 1

   C: -27 to 27 - 1

   D: 0 to 28

   Ans: B

4. The major goal of inheritance in C++ is:

   A: To facilitate the conversion of data types.

   B: To help modular programming.

   C: To extend the capabilities of a class.

   D: To hide the details of the base class.

   Ans: C

5. Consider the following class definitions:

       class a {
       };
       class b : protected a {
       };
       

   What happens when we try to compile this class?

   A: Will not compile because the class body of a is not defined.

   B: Will not compile because the class body of b is not defined.

   C: Will not compile because class a is not publicly inherited.

   D: Will compile successfully.

   Ans: D

6. Which of the following statements are true in C++?

   A: Classes cannot have data as public members.

   B: Structures cannot have functions as members.

   C: Class members are public by default.

   D: None of these.

   Ans: B

7. The use of the break statement in a switch statement is:

   A: Optional

   B: Compulsory

   C: To check an error

   D: None of the above

   Ans: A

8. To be called object-oriented, a programming language must allow:

   A: Functions that return only a single value

   B: #include files

   C: Inheritance

   D: All of the above

   Ans: C