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C++ Objective Questions - Page-9

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Question: 161

Which is the correct command used to compile source code (.cpp files) into object code(.o files)?

(A) g++ -o <filename>
(B) g++ -c <filename>
(C) g++ <filename>
(D) g++ -f <filename>

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

Question: 162

GCC compiler is known as?

(A) The GNU C compiler
(B) GNU C compiler
(C) Generic C compiler
(D) GDB C Compiler

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

Question: 163

The command nm on linux lists few symbols. What symbol 'D'represents?

(A) Normal Data Section
(B) Un initialized data section
(C) Initialized data section
(D) None of the above

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

Question: 164

#include<iostream>
using namespace std;

int main()
{
 int x = 9;
 while (x>0)
 x--;
 cout<<x;

return 0;
}

(A) 9876543210
(B) 987654321
(C) 9
(D) 0

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

Question: 165

How many times will A be printed ?

class A
{

public:
    ~A(){
    cout <<"A";
    }
};
int main()
{
    A obj;
    obj.~A();
}

(A) 0
(B) 1
(C) 2
(D) error

Compiler
Level: Practitioner Category: classesAndobjects
[Posted by: Rohit Iparkar | Pune]

Question: 166

Which of the following is not a C++ 17 library feature?

(A) std::variant
(B) std::optional
(C) std::string_view
(D) None of the above

Compiler
Level: Expert Category: cpp17
[Posted by: Admin | Chicago, USA]

Question: 167

Is this a valid syntax in C++ 17?

namespace A::B::C {
  int i;
}

(A) Yes
(B) No

Compiler
Level: Expert Category: cpp17
[Posted by: Admin | Chicago, USA]

Question: 168

Is this is a valid UTF-8 character literal? 

char x = u8'x';

(A) Yes
(B) No

Compiler
Level: Expert Category: cpp17
[Posted by: Admin | Chicago, USA]

Question: 169

Lambda expression are feature of which C++ version?

(A) C++11
(B) C++14
(C) C++ 17
(D) C++20

Compiler
Level: Expert Category: cpp14
[Posted by: Admin | Chicago, USA]

Question: 170

Which C++ version support Digit Separators 1'000'000?

(A) C++11
(B) C++14
(C) C++17
(D) C++20

Compiler
Level: Expert Category: cpp20
[Posted by: Admin | Chicago, USA]

Question: 171

Which version of C++ added feature of auto for return type of functions?

(A) C++11
(B) C++14
(C) C++17
(D) C++20

Compiler
Level: Expert Category: cpp20
[Posted by: Admin | Chicago, USA]

Question: 172

In which version of C++ auto was limited to lambda functions?

(A) C++11
(B) C++14
(C) C++17
(D) C++20

Compiler
Level: Expert Category: cpp20
[Posted by: Admin | Chicago, USA]

Question: 173

What is the correct way to initialize vector in C++?

(A) std::vector<integer> vecOfInts;
(B) std::vector int <vecOfInts>
(C) std::vector(int) vecOfInts;
(D) std::vector<int> vecOfInts;