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Interview Questions on Loops in C++ : (21) Questions

Question: 1

How many loops are there in C++ 98?

(A) 2
(B) 3
(C) 4
(D) 1

Compiler
Level: Beginner Category: loops
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Question: 2

What is correct syntax of a for loop in C++?

(A) for(initialization;condition; increment/decrement)
(B) for(increment/decrement; initialization; condition)
(C) for(initialization, condition, increment/decrement
(D) None of These

Compiler
Level: Beginner Category: loops
[Posted by: | ]

Question: 3

//How many times CppBuzz.com is printed in below C++ program?

#include<iostream>

int main()
{
    int i=0;
    lbl:
    std::cout<<"CppBuzz.com";
    i++;
    if(i<5)
    {
	goto lbl;
    }

    return 0;

}

(A) Error
(B) 5 times
(C) 4 times
(D) 6 times

Compiler
Level: Practitioner Category: loops
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Question: 4

Can a for loop contain another for loop?

(A) No
(B) Yes
(C) Compilation Error
(D) Runtime Error

Compiler
Level: Beginner Category: loops
[Posted by: | ]

Question: 5

//What should be the output?

#include<iostream>
using namespace std;

int main() {
    int new = -10;
    std::cout<<"new is: "<<new;
    return 0;
}

(A) new is: -10
(B) new is: 10
(C) Compilation Error
(D) new is: 0

Compiler
Level: Beginner Category: loops
[Posted by: | ]

Question: 6

What is size of void in C++?

(A) 2 Bytes
(B) 4 Bytes
(C) Undefined
(D) 0

Compiler
Level: Expert Category: loops
[Posted by: | ]

Question: 7

Exceptions are Caught at ?

(A) Compilation Time
(B) Run Time
(C) Linking Time
(D) No

Compiler
Level: Expert Category: loops
[Posted by: | ]

Question: 8

Can we have Constructor in Abstract class?

(A) Yes
(B) No

Compiler
Level: Practitioner Category: loops
[Posted by: | ]

Question: 9

Comma(,) is the operator which has least precdence among all operator.

(A) Yes
(B) No

Compiler
Level: Beginner Category: loops
[Posted by: | ]

Question: 10

//Find the output of below program:-

int main() 
{
int i = 0, x = 0;

do
{
    if(i % 5 == 0)
    {
       std::cout<<x;
       x++;
    }

    ++i;
}while(i<10);

cout<<x;

return 0;
}

(A) 01
(B) 012
(C) 0
(D) 0123

Compiler
Level: Practitioner Category: loops
[Posted by: | ]

Question: 11

#include<iostream>

int main() 
{
int i=0, x=0;

for(i=1; i<10; i*=2)
{
    x++;
    std::cout<<x;
}
std::cout<<x;

return 0;
}

(A) 1234567899
(B) 12345678910
(C) 123455
(D) 12344

Compiler
Level: Expert Category: loops
[Posted by: | ]

Question: 12

How many times 'its a while loop' should be printed?

int main()
{
int i = 1 ;
i = i - 1 ;

while(i)
{
    cout<<"its a while loop";
    i++ ;
}

return 0;
}

(A) 1
(B) 2
(C) 0
(D) Infinite Times

Compiler
Level: Expert Category: loops
[Posted by: | ]

Question: 13

How many times CppBuzz.com is printed here?

int main()
{

for(int i=0; i< 5; i++);
cout<<"CppBuzz.com";

return 0;
}

(A) 0
(B) 1
(C) 4
(D) 5

Compiler
Level: Beginner Category: loops
[Posted by: | ]

Question: 14

//Find the output of below program.

#include<iostream>

int main()
{
for(int i=1;i<=2;i++)
{
for(int j=i;j<=2;j++)
std::cout<<i<<@;
}
}

(A) 1@2@
(B) 1@2@1@
(C) 1@1@2@
(D) 1@2@2@

Compiler
Level: Practitioner Category: loops
[Posted by: | ]

Question: 15

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: | ]

Question: 16

What is the roll of tellg() in C++ file handling?

(A) Moves get pointer (input) to a specified location
(B) Moves put pointer (output) to a specified location
(C) Gives the current position of the get pointer
(D) Gives the current position of the put pointer

Compiler
Level: Practitioner Category: loops
[Posted by: | ]

Question: 17

The statement structure that is NOT a looping is:

(A) For
(B) Do…While
(C) If
(D) While

Compiler
Level: Beginner Category: loops
[Posted by: | ]

Question: 18

A process of repeating the workflow is called ...

(A) Branching
(B) Looping
(C) Rekursif
(D) Algorithm

Compiler
Level: Beginner Category: loops
[Posted by: | ]

Question: 19

#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: | ]

Question: 20

In C++ only synchronous exception can be handled

(A) True
(B) False

Compiler
Level: Beginner Category: loops
[Posted by: | ]

Question: 21

What should be the output of following code?

#include <iostream>
#include <string>


int main() {
   auto glambda = [](auto a, auto&& b) { return a < b; };
   bool b = glambda(3, 3.14);
   std::cout<<b;
   
    return 0;
}

(A) True
(B) False
(C) 1
(D) Compilation Error

Compiler
Level: Beginner Category: loops
[Posted by: | ]

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Interview Questions on Loops in C++ : (21) Questions

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