// Lab 5 - loops.cpp  Working with looping structures
// Llewellyn van der Merwe.
#include <iostream>
using namespace std;

int main()
{
   cout << "Llewellyn. \n";
   cout << "\nActivity 1 \n==========\n";
   // Change the following do-while loop to a while loop. 
   int inputNum = 1;
   while (inputNum != 0)
   {  cout << "Enter a number (or 0 to quit): ";
       cin  >> inputNum;
   }

   cout << "\nActivity 2 \n==========\n";
   // Change the following while loop to a do-while loop. 
   char doAgain = 'y';
   do
   {  cout << "Do you want to loop again? (y/n) ";
       cin  >> doAgain;
   } while (doAgain == 'Y' || doAgain == 'y');
 
   cout << "\nActivity 3 \n==========\n";
   // Change the following while loop to a for loop.
   for (int count = 1; count < 6; count++)
       cout << "Count is " << count << endl;

   cout << "\nActivity 4 \n==========\n";
   // Change the following for loop to a while loop.
   int x = 6;
   while (x-- > 1)
       cout << x << " seconds to go. \n";

   cout << "\nActivity 5 \n==========\n";
   // Make the following changes to the code below that uses nested loops:
   // 1. The code is supposed to print 3 lines with a $ and 5 stars on 
   //    each line, but it contains a logic error. Find and fix the error. 
   // 2. Then revise the code to follow each $ with just 4 stars, like this:
   //    $****
   //    $****
   //    $****
   // 3. Change the two loop control variable names to be more descriptive.
   for (int dollar = 1; dollar <= 3; dollar++)
   {  cout << '$';
      for (int star = 1; star < 5; star++)
         cout << '*';
      cout << "\n";
   }
   cout << endl;
 
   return 0;
}