Questions
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]
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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]
