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100 MCQ on C++ Programming

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Question: 1

What is the full form of oop

(A) Object oriented programming
(B) Oriented object programming
(C) Office oriented programming
(D) office objective programming

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

Question: 2

//What is the output of below program?

int main()
{
int a = 10;
cout<<a++;
return 0;
}

(A) 10
(B) 11
(C) 12
(D) Not defined

Compiler
Level: BeginnerCategory: operators
[Posted by: Admin | Chicago, USA]

Question: 3

class base
{
public:
       base()
       {          
           cout<<"BCon";
       }
       ~base()
       {
	   cout<<"BDest ";
       }
};
class derived: public base
{
public:
       derived()
       {     cout<<"DCon ";
       }
       ~derived()
       {     cout<<"DDest ";
       }
};

int main()
{
derived object;
return 0; 
}

(A) Dcon DDest
(B) Dcon DDest BCon BDest
(C) BCon DCon DDest BDest
(D) BCon DCon BDes DDest

Compiler
Level: BeginnerCategory: classesAndobjects
[Posted by: Admin | Chicago, USA]

Question: 4

//What is the value of a in below program?

int main()
{
 int a, b=20;
 a = 90/b;
 return 0;
}

(A) 4.5
(B) 4.0
(C) 4
(D) Compilation Error

Compiler
Level: BeginnerCategory: operators
[Posted by: Admin | Chicago, USA]

Question: 5

Which operator has highest precedence?

(A) ()
(B) =
(C) *
(D) ++

Compiler
Level: BeginnerCategory: operators
[Posted by: Admin | Chicago, USA]

Question: 6

Which operator has highest precedence in * / % ?

(A) *
(B) /
(C) %
(D) all have same precedence

Compiler
Level: PractitionerCategory: operators
[Posted by: Admin | Chicago, USA]

Question: 7

How to access and edit data in data file handling using structures

(A) read()
(B) write()
(C) both A and B
(D) without read()

Compiler
Level: PractitionerCategory: operators
[Posted by: Admin | Chicago, USA]

Question: 8

//What is output of below program?
#include<iostream>

int main()
{
  const int a=10;
  a++;
  std::cout<<a;
  return 0;

}

(A) 10
(B) 11
(C) Compilation Error
(D) Linking Error

Compiler
Level: BeginnerCategory: operators
[Posted by: Admin | Chicago, USA]

Question: 9

How many times CppBuzz.com is printed?

#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: PractitionerCategory: loops
[Posted by: Admin | Chicago, USA]

Question: 10

Can we overload functions in C++?

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

Compiler
Level: BeginnerCategory: function
[Posted by: Admin | Chicago, USA]

Question: 11

#include<iostream>

void Execute(int &x, int y = 200)
{
 int TEMP = x + y;
 x+= TEMP;
 if(y!=200)
     std::cout<<TEMP<<x<<y<<"--";
}

int main()
{
 int A=50, B=20;
 std::cout<<A<<B<<"--";
 Execute(A,B);
 std::cout<<A<<B<<"--";
 return 0;
}

(A) 5020--5020--
(B) 5020--7012020--12020--
(C) 5020--70120200--5020
(D) 5020--7050200--5020--

Compiler
Level: PractitionerCategory: function
[Posted by: Admin | Chicago, USA]

Question: 12

What is currect syntax of for loop?

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

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

Question: 13

Can we typecast void * into int *?

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

Compiler
Level: PractitionerCategory: datatype
[Posted by: Admin | Chicago, USA]

Question: 14

What should be the output of below program?

int main()
{
int a=10; 
cout<<a++;
return 0;
}

(A) 11
(B) 10
(C) Error
(D) 0

Compiler
Level: BeginnerCategory: operators
[Posted by: Admin | Chicago, USA]

Question: 15

Which operator has highest precedence �in below list?

(A) +
(B) -
(C) ++
(D) *

Compiler
Level: BeginnerCategory: operators
[Posted by: Admin | Chicago, USA]

Question: 16

Which operator can not be overloaded?

(A) +
(B) -
(C) *
(D) ::

Compiler
Level: BeginnerCategory: operators
[Posted by: Admin | Chicago, USA]

Question: 17

What is size of int data type in cpp?

(A) 2 Bytes
(B) 4 Bytes
(C) 1 Byte
(D) Depends on Compiler

Compiler
Level: BeginnerCategory: operators
[Posted by: Admin | Chicago, USA]

Question: 18

What following operator is called 
?:

(A) Scope Resolution Operator
(B) Conditional Operator
(C) Ternary Operator
(D) if else o/p

Compiler
Level: BeginnerCategory: operators
[Posted by: Admin | Chicago, USA]

Question: 19

What is the output of below program?

int main()
{
 if(0)
 {
    std::cout<<"Hi";
 }
 else
 {
    std::cout<<"Bye";
 }
return 0;
}

(A) Hi
(B) Bye
(C) HiBye
(D) Compilation Error

Compiler
Level: BeginnerCategory: conditional
[Posted by: Admin | Chicago, USA]

Question: 20

How many loops are there in C++ 98?

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

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

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