C Plus Plus(C++) Programming Language Questions with Answers | Solved MCQs

37. precision() is used to _____________.

• [A] sets format flags that control the format of output display
• [B} specifies the number of digits to be displayed after decimal point.
• [C} clears the flags.
• [A] specifies the required number of fields to be used while displaying the output value.

Answer: Option [B]

38. Which of the following is not a valid file mode?

• [A] ios::in
• [B} ios::out
• [C} ios::truncate
• [A] ios::noreplace

Answer: Option [C]

39. _________ allows access to the specific data without need for accessing its preceding its data items.

• [A] sequential file
• [B} random file
• [C} get file
• [A] put file

Answer: Option [B]

40. Which one of the following is invalid variable name?

• [A] 1count
• [B} count.
• [C} count1.
• [A] count_1.

Answer: Option [A]

41. The elements of an array can be accessed by providing integer expression called _______.

• [A] superscripts.
• [B} elements.
• [C} values.
• [A] subscripts.

Answer: Option [D]

42. ___________ is not a type of scope in c++.

• [A] Global.
• [B} Local.
• [C} File.
• [A] Function.

Answer: Option [D]

43. Which of the following is the proper keyword to deallocate memory?

• [A] free
• [B} delete
• [C} clear
• [A] remove

Answer: Option [A]

44. Most of the statement in C++ program should end with ______

• [A] a full stop (.).
• [B} a comma (,).
• [C} a semicolon (;).
• [A] a colon (:).

Answer: Option [C]

45. If and the switch statements are called as _____ statements.

• [A] iteration.
• [B} jump.
• [C} selection
• [A] conditional

Answer: Option [C]

46. Find out the error in following block of code. if (x=100) cout<< "x is 100"

• [A] 100 should be enclosed in quotations
• [B} There is no semicolon at the end of first line.
• [C} Equals to operator mistake.
• [A] Variable x should not be inside quotation.

Answer: Option [C]

47. If the type specifier of parameters of a function is followed by an ampersand (&), that function call is _______.

• [A] pass by value.
• [B} pass by value.
• [C} array of structures.
• [A] array of structures. pointers.

Answer: Option [B]

48. The general form, of assignment operator is _____.

• [A] variable_name=expression
• [B} datatype=expression.
• [C} variable=expression.
• [A] datatype=expression.

Answer: Option [A]