C++ Loop Important MCQs

Which Loop is Faster in C++?

(a) For
(b) While
(c) Do While
(d) All work at same speed


(d) All work at same speed

Size of a Turbo C/C++ Compiler is?

(a) 16 Bit
(b) 32 Bit
(c) 64 Bit
(d) None


(a) 16 Bit

ASCII Value of '\0' Character is?

(a) 0
(b) 48
(c) 32
(d) 65


(a) 0

Which of the following is a formate String?

(a) \n
(b) &
(c) %d
(d) none


(c) %d

Do While Loop is a also known as ______.

(a) Entry Control
(b) Per Tested
(c) Exit Control
(d) All of Above


(c) Exit Control

What is the Ranged of Signed Char?

(a) 0 to 255
(b) -128 to 127
(c) 127 to -128
(d) 0 to 127


(b) -128 to 127

What is the size of Following Struct(Turbo C++ 16 Bit Compiler)?

Syntax :

Struct
{
  int a;
  char b;
  float c;
}
        

(a) 2 Bytes
(b) 4 Bytes
(c) 10 Bytes
(d) 7 Bytes


(d) 7 Bytes
In Struct you can add all the bytes

Whic of the following is Logical AND Operator?

(a) ||
(b) &
(c) &&
(d) !


(c) &&

Which of the following is a subscript operator?

(a) *
(b) {}
(c) []
(d) ()


(c) [] they used in Array

Which loop is guaranteed to execute at-least once?

(a) for loop
(b) while loop
(c) do-while loop
(d) None


(c) do-while loop

What will be the output of the following C++ code?

#include <iostream>
using namespace std;
int main() {
    int n ;
    for (n = 5; n < 0; n--) 
    {
        cout << n;
        if (n == 3) 
        break;
    }
    return 0;
}

(a) 543
(b) 42
(c) 46
(d) 78


(a) 543

the destination statement for the goto label is identified by what label?

(a) $
(b) @
(c) *
(d) :


(d) : (Colon)

how are many sequences of statements present in c++?

(a) 1
(b) 4
(c) 5
(d) 8


(c) 5

Decision Control statements in C++ can be implemented using?

(a) if
(b) if-else
(c) Conditional Operator
(d) All of the above


(d) All of the above

What will be the output of the following C++ code?

#include <iostream>
using namespace std;
int main() {

    if (0) {
        cout << "Hello";
    }
    else 
    {
        cout << "Good Bye";
    }
    return 0;
}

(a) Hello
(b) HelloGood by
(c) Good Bye
(d) Compilation Error


(c) Good Bye

what is correct syntax of for loop in c++?

(a)

for (statement 1; statement 2; statement 3) {
  // code block to be executed
}

(b)

for (statement 1; statement 2; statement 3) {
  // code block to be executed
}




(c)

for (statement 1, statement 2, statement 3) {
  // code block to be executed
}




(d)

for (statement 1: statement 2: statement 3) {
  // code block to be executed
}




(a)

The if...else statement can be replaced by which operator?

(a) Addition operator
(b) Multiplicative operator
(c) Conditional operator
(d) Bitwise operator


(c) Conditional operator

how many minimum number of functions should be present in a c++ program for its execution?

(a) 0
(b) 1
(c) 2
(d) 3


(b) 1

What is the correct Syntax of do while loop?

(a)

do {
  // code block to be executed
}
while (condition);

(b)

do(condition) {
  // code block to be executed
}
while;

(c)

while {
  // code block to be executed
}
do (condition);

(d)

do {
  // code block to be executed

while (condition)
};

(a)

What will be the output of the following code?

#include <iostream>

    using namespace std;
    
    int main() {
            for (int i = 1; i <= 5; ++i) {
            cout << i << " ";
        }
        return 0;
    }

(a) 1 3 4 5
(b) 1 2 3 4 5
(c) 5 4 3 2 1
(d) 4 5 1 2 3


(b) 1 2 3 4 5

How are many sequences of statements present in c++?

(a) 1
(b) 2
(c) 4
(d) 5


(d) 5

How many types of loops are there in C++?

(a) 1
(b) 2
(c) 3
(d) 4


(c) 3 (while loop,for loop, do while loop)

The break statement in repetition structure causes a program to

(a) Again start the loop from 1
(b) All of them
(c) Terminate
(d) Immediately exit


(d) Immediately exit

Loop is used for ___________.

(a) Selection
(b) Decision
(c) Repetition
(d) None of these


(c) Repetition

How many tyes of loop are used in C++?

(a) Two
(b) Three
(c) Five
(d) Seven


(b) Three

Which of the following is NOT a loop?

(a) for
(b) while
(c) do while
(d) while do


(d) while do

Which of the loop is also called counter loop?

(a) for
(b) do while
(c) while
(d) All of these


(a) for

One execution of the loop is known as a/an?

(a) Test
(b) Iteration
(c) Repeated
(d) All of these


(b) Iteration

The loop which never ends is called ______.

(a) Counter Loop
(b) Infinite Loop
(c) Nested Loop
(d) None of these


(b) Infinite Loop

The for loop contains _________ expressions.

(a) 3
(b) 4
(c) 7
(d) 9


(a) 3

A for loop contains three expression: initialization, condition, and _______.

(a) Increment
(b) Decrement
(c) Increment/Decrement
(d) Validat


(c) Increment/Decrement

It is the simplest loop in c++ langauge?

(a) for loop
(b) while loop
(c) do while
(d) Nested Loop


(a) for loop

Which of the following loop is called entry controlled loop?

(a) for loop
(b) while loop
(c) do while
(d) None


(b) while loop

Which of the following is pre tested loop in c++?

(a) for loop
(b) while loop
(c) do while
(d) Nested Loop


(b) while loop

Which of the following is post tested loop in c++?

(a) for loop
(b) while loop
(c) do while loop
(d) None of these


(c) do while loop

In which loop the condition comes before the body of the loop?

(a) for loop
(b) while loop
(c) do while loop
(d) Nested Loop


(b) while loop

In which loop the condition comes after the body of the loop.

(a) for loop
(b) while loop
(c) do while loop
(d) Nested Loop


(c) do while loop

Semicolon is placed at the end of condition in ___________.

(a) for loop
(b) while loop
(c) do while loop
(d) Nested Loop


(c) do while loop

A loop within a loop is called __________ loop.

(a) for loop
(b) while loop
(c) do while loop
(d) Nested Loop


(c) do while loop

The statements within curly braces in a loop is known as _____________.

(a) Statement
(b) Part
(c) Body
(d) All of these


(c) Body

Which of the following is NOT a loop.

(a) for loop
(b) while loop
(c) do while loop
(d) for if loop


(d) for if loop

What is correct syntax of for loop?

(a) for(initialization:condition:increment/decrement);
(b) for(initialization:condition:increment/decrement)
(c) for(initialization; condition;increment/decrement)
(d) for(initialization;condition;increment/decrement);


(c) for(initialization; condition;increment/decrement)

Which of the ends multiple Statements while loop?

(a) Semicolon (;)
(b) Right Brace
(c) Right Bracket
(d) All of these


(b) Right Brace

What is correct syntax of do while loop?

(a) do{ body of loop} while(condition)
(b) do{ body of loop} while(condition);
(c) do{ body of loop} while(condition):
(d) while{ body of loop } do(condition);


(b) do{ body of loop} while(condition);

What is correct syntax of while loop?

(a) while (condition) [ body of loop ]
(b) while { body of loop }
(c) while (condition) { body of loop }
(d) while (condition); { body of loop }


(c) while (condition) { body of loop }

for, while and do is the _______.

(a) Variable
(b) Data Type
(c) Keywords
(d) All of these


(c) Keywords

Which is the correct ?

(a) for(int i = 0: i<=10: i++)
(b) for(int i = 0; i<=10; i++)
(c) for(int i = 0; i<=10; i++);
(d) for(int i = 0, i<=10; i++)


(b) for(int i = 0; i<=10; i++)

If you want a user to enter exactly 50 values, which loop would be best to use?

(a) for Loop
(b) while Loop
(c) do while Loop
(d) All of these


(a) for Loop

You can never use addresss of ______ variable ?

(a) Global
(b) Static
(c) Auto
(d) Register


(d) Register

The default Storage for local Variables is?

(a) Extren
(b) Static
(c) Auto
(d) Register


(c) Auto

How many times will "Hello, World" be printed in the below program?

#include <stdio.h>
   
            int main(){
   	
            int i = 1024;
    	
            for(; i; i >>=1){
        	
            printf("Hello, World");
            
            return 0;
        
            }
   
            }
            

(a) 10
(b) 11
(c) Infinite
(d) Compile time Error


(b) 11

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