C++ Objective Questions Page 9 of 14

Home » C++ » Objective Questions

Showing Page 9 (161 - 180)

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++

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++

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

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

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

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

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

Question: 168

Is this is a valid UTF-8 character literal? 

char x = u8'x';

(A) Yes
(B) No

Compiler
Level: Expert Category: cpp17

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

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

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

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

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;

Compiler
Level: Practitioner Category: stl

Question: 174

What is true about his statement in C++?
std::vector<int> vecInts(5);

(A) Initialize a Vector with 5 int & all default value is 0
(B) Initialize a Vector with 5 int
(C) Initialize a Vector with 5 int & all default values will be garbage
(D) Initialize a Vector with 5 int & All default value with be -1

Compiler
Level: Practitioner Category: stl

Question: 175

Is it possible to initialize any Vector with an Array in C++?

(A) Yes
(B) No

Compiler
Level: Practitioner Category: stl

Question: 176

Will below program run without any compilation errors?
Assume that all header files are included.

int main()
{

std::list<std::string> listOfStr;
listOfStr.push_back("1");
listOfStr.push_back("2");
listOfStr.push_back("3");
listOfStr.push_back("4");
 
// Initialize a vector with std::list
std::vector<std::string> vecOfStr(listOfStr.begin(),listOfStr.end());
 
for(std::string str : vecOfStr)
    std::cout<<str<<std::endl;

return 0;
}

(A) Yes
(B) No

Compiler
Level: Practitioner Category: stl

Question: 177

What should be the output of below program? Assume that all header files are included.

int main()
{
std::list<std::string> listOfStr;
listOfStr.push_back("1");
listOfStr.push_back("2");
listOfStr.push_back("3");
listOfStr.push_back("4");
 
// Initialize a vector with std::list
std::vector<std::string> vecOfStr(listOfStr.begin(), listOfStr.end());
 
for(std::string str : vecOfStr)
    std::cout<<str;

return 0;
}

(A) 1 2 3 4
(B) 1234
(C) 12340
(D) 01234

Compiler
Level: Practitioner Category: stl

Question: 178

What does this function do?

void func() {
	std::vector<std::string> vecOfString(5, "Hi");
 
	for (std::string str : vecOfStr)
		std::cout << str << std::endl;
 
}

(A) Initialize vect to 5 string with value "Hi"
(B) Initialize vect's first element to a string with value "Hi" & prints them
(C) Initialize vect to 1 string with value "Hi" & prints only one
(D) Initialize vect to 5 string with value "Hi" & prints them

Compiler
Level: Practitioner Category: stl

Question: 179

Correct syntax for creating a thread using Function Pointer?
thread_function is the name of function which need to be executed
in separate thread.

(A) std::thread threadObj(thread_function);
(B) std::thread threadObj(&thread_function);
(C) std::thread threadObj((void *)thread_function);
(D) std::thread threadObj(thread_function());

Compiler
Level: Expert Category: cpp11

Question: 180

A struct can contain members of various data types

(A) TRUE
(B) FALSE

Compiler
Level: Beginner Category: structure

C++ Online Test
Compile C++ code here

Browse C++ Categories

Loops Conditional Functions Operators Structure Enum Data Types Inheritance Pointers Classes & Objects Vtable Type Casting New & Delete Namespaces Virtual Functions Abstract Class STL Singleton Class Exceptions C++11 C++17 C++20 Time & Space Complexity others

Switch to C Questions

MCQs

Problems

Projects

Compiler

Online Test

About Us | Contact Us | Privacy Policy | Career | Online Training
Youtube LinkedIn Facebook Twitter Instagram
Copyright©CppBuzz.com
Like many websites, we use cookies to ensure best browsing experience on our website. While using this website, you acknowledge to have read and accepted our cookie and privacy policy.