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C++ Objective Questions - Page-7

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Question: 121

Can a parameter be both const and volatile?

(A) Yes
(B) No

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

Question: 122

What is/are true statements are const volatile variables?

(A) It is volatile because it can change at any time
(B) It is const because our C program must not try to modify it
(C) Change value outside by means outside our C program
(D) All of these

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

Question: 123

What is the advantage of local variable?

(A) It saves memory
(B) It releases memory once it go out of scope
(C) It inrease execution time of program
(D) None of these

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

Question: 124

Which one of these takes more memory?

(A) Pass by Value
(B) Pass by reference
(C) Pass by pointer/address
(D) Depends on Compiler

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

Question: 125

Which one of these is invalide file mode?

(A) ios::trunc
(B) ios::ate
(C) ios::app
(D) ios::tellg

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

Question: 126

Which one is correct syntax to use C++11 features while compilation?

(A) g++ -std=c++-11 -o output.out source.cpp
(B) g++ -std=c++11 -o output.out source.cpp
(C) g++ -std=c++ 11 -o output.out source.cpp
(D) g++ -std=cpp11 -o output.out source.cpp

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

Question: 127

In the below program 
int main(int argc, char *argv[]){}
what would be the value of argv[argc]?

(A) Filename
(B) First argument
(C) Last argument
(D) NULL pointer

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

Question: 128

Which one is true ?

(A) We can create link using structure only
(B) We can create link list using class only
(C) We can create link list either by class or structure
(D) We should ignore implementation of link list using structure as it consume more memory

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

Question: 129

Which one of the following is correct syntax for nmake command?

(A) nmake -f myfile option
(B) nmake -f opiton myfile
(C) nmake option -f myfile
(D) nmake option -fname myfile

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

Question: 130

What should be output of below program? program is compiled on g++ compiler.

#include<iostream>
using namespace std;

struct student{	
 char a;  char b;  int c;
};

int main()
{
 cout<<sizeof(student);	
 return 0;
}

(A) 4
(B) 6
(C) 8
(D) 12

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

Question: 131

#include<iostream>
using namespace std;

struct student{	
 char a; int c;	char b;
};

int main()
{
    cout<<sizeof(student);	
    return 0;
}

(A) 4
(B) 6
(C) 8
(D) 12

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

Question: 132

#include<iostream>
using namespace std;

struct student{	
    int a; char b; char c;
};

int main()
{
    cout<<sizeof(student);	
    return 0;
}

(A) 4
(B) 6
(C) 8
(D) 12

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

Question: 133

Is below program of C++ 11 valid & runs without compilation error?
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;

void print_square(int i)
{
 cout << i*i << endl;
}
int main()
{
 vector<int> v;
 // vector gets filled
 for_each(v.begin(), v.end(), print_square);
 return 0;
}

(A) Yes
(B) No
(C) Depends on Compiler

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

Question: 134

Is this valid C++ 11 program & get compiled without any error?

#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;

int main() {

vector<int> v;
// vector gets filled

for_each(v.begin(), v.end(),
[](int i) { cout << i*i << endl; } );

return 0;
}

(A) Yes
(B) No

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

Question: 135

Find the output of below program
#include<iostream>
using namespace std;
enum color{
	Black,
	blue,
	red	
};
int main()
{
    color obj = blue;
    cout<<obj;
    return 0;
}

(A) blue
(B) 2
(C) 1
(D) None of these