Object Oriented Programming with C Plus Plus - Multiple Choice Questions -003

21. When a data type must contain decimal numbers, assign the ______ type.

A. int.

B. char.

C. double.

D. long int.

ANSWER: C

22. Set precision requires the header file _____.

A. stdlib.h.

B. iomanip.h.

C. console.h.

D. conio.h.

ANSWER: B

23. A structure defines a ________type.

A. class.

B. pointers.

C. arrays.

D. variables.

ANSWER: A

24. _____ are the variables that contain the address of other variables.

A. Function.

B. String.

C. Pointer.

D. Identifier.

ANSWER: C

25. _____ operator returns the address of the identifier.

A. &.

B. *.

C. &&.

D. !.

ANSWER: A

26. The ________ operator is used to return the value of the variable to which the pointer points.

A. reference.

B. dereference.

C. dot.

D. arrow.

ANSWER: B

27. C++ begins its execution with ____.

A. header file.

B. main.

C. class.

D. declaration.

ANSWER: B

28. main() is a______ function.

A. built in.

B. user defined.

C. constant.

D. derived.

ANSWER: B

29. ________ is a unary operator that returns the memory address of its operand.

A. &.

B. ++.

C. _ _.

D. ||.

ANSWER: A

30. ________ is a stream connected to standard output.

A. cin.

B. gets.

C. out.

D. cout.

ANSWER: D