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C++ Objective Questions - Page-6

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Question: 101

Which language is not a true object-oriented programming language?

(A) VB.NET
(B) VB 6
(C) C++
(D) C#

Compiler
Level: Beginner Category: other
[Posted by: Admin | Chicago, USA]

Question: 102

What do you understand by GUI?

(A) Uses buttons, menus, and icons
(B) Should be easy for a user to manipulate
(C) Stands for Graphic Use Interaction
(D) Both A and B

Compiler
Level: Beginner Category: other
[Posted by: Admin | Chicago, USA]

Question: 103

Which is not an integer data type?

(A) Single
(B) Byte
(C) Short
(D) Integer

Compiler
Level: Beginner Category: datatype
[Posted by: Admin | Chicago, USA]

Question: 104

A constructor is a special type of?

(A) class
(B) field
(C) function
(D) property

Compiler
Level: Beginner Category: classesAndobjects
[Posted by: Admin | Chicago, USA]

Question: 105

What is the best way to convert int to string according to C++ standard?

(A) char *intStr = itoa(a); string str = string(intStr);
(B) std::string s = std::to_string(42);
(C) char stringNum[20]; int num=100; sprintf(stringNum,"%d",num);
(D) None of the above

Compiler
Level: Expert Category: function
[Posted by: Admin | Chicago, USA]

Question: 106

What is true ? when we explicitly declare a function to use the __fastcall convention.

(A) Arguments are placed in registers
(B) Arguments are placed in stack
(C) Arguments are placed in Heap
(D) None of the above

Compiler
Level: Expert Category: function
[Posted by: Admin | Chicago, USA]

Question: 107

Which one of these is not calling convention?

(A) cdecl
(B) syscall
(C) pascal
(D) register

Compiler
Level: Expert Category: function
[Posted by: Admin | Chicago, USA]

Question: 108

Which file format is used in Binaries on Linux

(A) ELF
(B) DLLs
(C) PE
(D) None of the above

Compiler
Level: Expert Category: other
[Posted by: Admin | Chicago, USA]

Question: 109

What is the correct syntax for lambda expression in C++11?

(A) [capture](parameters)->return-type {body}
(B) [parameters](capture)->return-type {body}
(C) [capture][parameters]->return-type {body}
(D) (capture)(parameters)->return-type {body}

Compiler
Level: Expert Category: cpp11
[Posted by: Admin | Chicago, USA]

Question: 110

Does below code compiles successfully on C++11?

class C
{
 int a=7;

 public:
        C();
};

(A) Yes
(B) No

Compiler
Level: Expert Category: cpp11
[Posted by: Admin | Chicago, USA]

Question: 111

What is the purpose of 'default' keyword in C++ 11?

(A) It instruct the compiler to set default value to any variable
(B) It instruct the compiler to set default return value to any function
(C) It instruct the compiler to set default argument values for any function
(D) It instruct the compiler to generate the default implementation

Compiler
Level: Beginner Category: loops
[Posted by: Admin | Chicago, USA]

Question: 112

What do you understand from lexical analysis?

(A) Checking the Grammar
(B) Finding the type of names and expressions
(C) Making up tokens from characters
(D) None of these

Compiler
Level: Beginner Category: cpp11
[Posted by: | Chicago, USA]

Question: 113

In C++11 which data type is newly introduced among these?

(A) long
(B) long int
(C) longs long
(D) long long

Compiler
Level: Beginner Category: cpp11
[Posted by: | Chicago, USA]

Question: 114

Which keyword in C++ 11 is used to prevent a virtual function from being overridden?

(A) final
(B) static
(C) stop
(D) friend

Compiler
Level: Beginner Category: cpp11
[Posted by: | Chicago, USA]

Question: 115

If C functions will be called from C++, 
then C include files will use the following declaration.
is this True / False?

#ifdef __cplusplus
extern "C" {
#endif

//C function declarations

#ifdef __cplusplus
}
#endif

(A) True
(B) False

Compiler
Level: Practitioner Category: other
[Posted by: | Chicago, USA]

Question: 116

The following code will fail to compile:

template <typename T, typename U>
void call_foo(T t, U u) {
  t.foo<U>(u);
}

How would you fix this?

(A) t.foo template<U>(u);
(B) t.foo<typename U>(u);
(C) t.template foo<U>(u);
(D) typename t.foo<U>(u);

Compiler
Level: Expert Category: other
[Posted by: | Chicago, USA]

Question: 117

Which one of these is not a keyword?

(A) do
(B) sizeof()
(C) goto
(D) sqrt()

Compiler
Level: Practitioner Category: keyword
[Posted by: Admin | Chicago, USA]

Question: 118

C++ 11 introduces a new keyword. Find out that keyword.

(A) pragma
(B) override
(C) wchar_t
(D) mutable

Compiler
Level: Practitioner Category: cpp11
[Posted by: Admin | Chicago, USA]

Question: 119

What is the use of mutable keyword?

(A) It makes variable constant
(B) There is no such keyword in C++
(C) It allows a class data member to be modified even though it is the data member of a const object
(D) None of these

Compiler
Level: Practitioner Category: keyword
[Posted by: Admin | Chicago, USA]

Question: 120

Why use register keyword in C++ code?

(A) It saves the memory
(B) It runs code faster by allocating varibales in CPU register
(C) It takes extra bytes of memory
(D) Register variable are used with high configuration machines

Compiler
Level: Practitioner Category: keyword
[Posted by: Admin | Chicago, USA]

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