C++ Multiple Choice Questions Page 13 of 14

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Question: 241

If no handler at any level catches the exception, terminate() will be called and program will terminate

(A) True
(B) False

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Level: Practitioner

Category of MCQ: exceptions in C++

Question: 242

void some_function() throw ();

How does above function behaves?

(A) Function declaration has error
(B) Behaviour is unknown
(C) Function will throw only standard exceptions defined in <exception>
(D) Function will not throw any exception

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Level: Practitioner

Category of MCQ: exceptions in C++

Question: 243

In C++ only synchronous exception can be handled

(A) True
(B) False

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Level: Beginner

Category of MCQ: loops in C++

Question: 244

#include<iostream>
using namespace std;

class Country{
private: int population;

public: void setPopulation(int pop){
             this->population = pop;
          }
         int getPopulation(){
             return this->population;
         }
};

class USA: private Country{

};

int main(){
USA obj;
obj.setPopulation(100);
cout<<obj.getPopulation();
return 0;
}

(A) 100
(B) 0
(C) Compilation Error
(D) Garbage Value is printed

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Level: Expert

Category of MCQ: inheritance in C++

Question: 245

#include<iostream>
#include<string.h>
using namespace std;

int main()
{
    char one[]="one";
    char two[]="two";
    
    if(one==two){
        cout<<"Equal";
    }
    
    if(strcmp(one, two)==0){
        cout<<"Equal";
    }
    else
    {
        cout<<"NotEqual";
    }

    return 0;
}

(A) Equal
(B) EqualEqual
(C) EqualNotEqual
(D) NotEqual

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Level: Practitioner

Category of MCQ: conditional in C++

Question: 246

Can we have nested namespaces in C++?

(A) Yes
(B) No

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Level: Beginner

Category of MCQ: namespace in C++

Question: 247

What should be the location of "using namespace std;" in c++ code?

(A) Before all #include
(B) After #include<iostream>
(C) In middle of #includes
(D) After all #inludes

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Level: Beginner

Category of MCQ: namespace in C++

Question: 248

What is different between these two lines?
 using namespace std;
 using std::cout;

(A) Using the entire namespace, using only single name from namespace
(B) There is no difference
(C) We can't use only cout from std namespace

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Level: Beginner

Category of MCQ: namespace in C++

Question: 249

#include<iostream>
#define killer using

killer namespace std;

int main(){
    std::cout<<"CppBuzz.com";
    return 0;
}

(A) Runtime Error
(B) Compilation Erro
(C) Nothing is printed
(D) CppBuzz.com

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Level: Beginner

Category of MCQ: namespace in C++

Question: 250

How this code would behave?

#include<iostream>
#include<exception>
using namespace std;

class cppbuzz{
    
public:
    cppbuzz(){
        cout<<"constructor.";
        int a; 
        throw a;
    }
    ~cppbuzz(){
        cout<<"destructor.";
    }
};

int main()
{
    cppbuzz *ptr = new cppbuzz();
    delete ptr;

return 0;
}

(A) Program is terminated without printing anything on console
(B) Prints 'constructor' and then it is terminated
(C) constructor.destructor. but ptr is never freed
(D) constructor.destructor. And ptr is freed

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Level: Practitioner