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C++ Loops

This quiz tests your knowledge of loops in C++. It contains 10 questions.

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Question 1

How many times will the loop run?

C++

#include <iostream>
using namespace std;

int main() {

    for (i = 0; i < 15; i++) {
        cout << i << endl;
    }
    return 0;
}

14
16
Error
15

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Question 2

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;
   }

543
5432
54
432

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Question 3

Which of the following for loop will not work?

for (int i=0; i<5; i++)
for (int i=5; i<=10; i++)
for (int i=5; i=10; i++)
all of the above

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Question 4

The statement i++; is equivalent to

i = i + i;
i = i + 1;
i = i - 1;
i --;

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Question 5

How many times the loop will run?

#include <iostream>
using namespace std;
int main() {
    int i;
    for (i = 0; i < 15; i++) {
        cout << i << endl;
    }
    return 0;
}

12
15
14
Error

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Question 6

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

#include <iostream>
using namespace std;
int main()
{
      int n = 15;
      for (;;) 
   cout << n;
      return 0;
}

error
infinite times of printing n
15
none of the mentioned

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Question 7

Choose a correct C++ for loop syntax.

for(initalization; condition; inc/dec){ // statements };
for(declaration; condition; incrementoperation){ // statements };
for(declaration; incrementoperation; condition){ // statements };
for(initalization; condition; incrementoperation){ // statements };

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Question 8

What is the way to suddenly come out of or quit any loop in C++?

continue; statement
break; statement
leave; statement
quit; statement

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Question 9

Choose the type of loop which is guaranteed to execute at-least once?

for loop
while
do-while
None

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Question 10

What is the do-while loop also known as?

Entry control
Exit control
Per tested
All of the above

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C++

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