Q1. Explain what is wrong with the following while loops, and then also rewrite

Question

Q1.   Explain what is wrong with the following while loops, and then also rewrite the correct loop.

int counter = 1;

while (counter < 100)

{

   cout << counter << “ ”;

   counter--;

}

Q2.   What is the output of the following program:

#include <iostream>

using namespace std;

int main()

{

   double y = 0;            // y is set to 0

   while (y < 10)

   {

      y += 3;              // y is incremented by 3

   }                       

   cout << y << " ";     

   return 0;

}

Q3.   What is the output of the following code fragment?

int Sum = 0,

outerCount = 1;

while (outerCount <= 3)

{

     int innerCount = 1;

     while (innerCount <= outerCount)

     {

         Sum = Sum + innerCount;

         innerCount++;

     }

outerCount++;

}

cout << Sum << endl;

Q4.   After execution of the following code fragment, what value is printed for Length?

int Length = 5, Count = 4;

while (Count <= 6) {

if (Length >= 100)

Length = Length - 2;

else

Length = Count * Length;

Count++;

}

cout << "Length = " << Length << endl;

int counter = 1;

while (counter < 100)

{

   cout << counter << “ ”;

   counter--;

}

Explanation / Answer

Q1.
increment counter like

counter++;

Q2.
O/p is

12

Q3.
9

Q4.
600

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