1. Which looping process is best used when the number of iterations is known?

1. 1. all looping processes require that the iterations be known

   
   
   

   2. do-while

   
   
   

   3. while

   
   
   

   4. for

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   for

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2. How many types of loops are there?

1. 1. 1

   
   
   

   2. 2

   
   
   

   3. 3

   
   
   

   4. 4

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   There are four types of loop. They are the while, do while, nested, for the loop.

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3. What is the output of this program?
   

   #include 
       using namespace std;
       int main()
       {
           int k;
           for (k = 0; k < 20; k++);
           {
               cout << k;
           }
           return 0;
       }
   

1. 1. 0

   
   
   

   2. 20

   
   
   

   3. Compilation Error

   
   
   

   4. Runtime Error

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   for loop with a semicolon is called as body less for loop. It is used only for incrementing the variable values. So in this program the value is incremented and printed as 20.

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4. What is the output of this program?
   

   #include 
       using namespace std;
       int main()
       {
           int num = 20;
           for ( ; ;)
           cout << num;
           return 0;
       }
   

1. 1. 20

   
   
   

   2. Compilation Error

   
   
   

   3. Runtime Error

   
   
   

   4. infinite times of printing num

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   There is not a condition in the for loop, So it will loop continuously.

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