Overflow Underflow and Operator and using Loop Pro in C++

Overflow Underflow

#include 

#include

using namespace std;

int main() 

{

   int i1 = 2147483647;      

   cout << i1 + 1 << endl;   

   cout << i1 + 2 << endl;   

   cout << i1 * i1 << endl;  

   int i2 = -2147483648;     

   cout << i2 - 1 << endl;   

   cout << i2 - 2 << endl;   

   cout << i2 * i2 << endl;  

   return 0;

}

Increment Decrement Operators

#include 

#include

using namespace std;

int main() 

{

   int mark = 76;        

   cout << mark << endl; 

   mark++;               

   cout << mark << endl; 

   ++mark;                 

   cout << mark << endl; 

    mark = mark + 1;      

   cout << mark << endl; 

   mark--;               

   cout << mark << endl; 

    --mark;               

   cout << mark << endl; 

   mark = mark - 1;      

   cout << mark << endl; 

   return 0;

}

Implicit Automatic Type Conversion

#include 

#include

#include 

using namespace std;

 int main() 

{

   int i;

   double d;

    cout << fixed << setprecision(1);

    i = 3;

   d = i;    

   cout << "d = " << d << endl;  

   d = 5.5;

   i = d;    

   cout << "i = " << i << endl;  

   i = 6.6;  

   cout << "i = " << i << endl;  

}

Counter-Controlled Loop

#include 

#include

using namespace std;

int main() 

{

   int sum = 0;     

   int upperbound;

   cout << "Enter the upperbound: ";

   cin >> upperbound;

   for (int number = 1; number <= upperbound; ++number) 

   {

      sum += number;

   }

   cout << "Sum is " << sum << endl;

   cout << "Average is " << (double)sum / upperbound << endl;

   int count = 0;     

   sum = 0;           

   for (int number=1; number <= upperbound; number=number+2) 

   {

      ++count;

      sum += number;

   }

   cout << "Sum of odd numbers is " << sum << endl;

   cout << "Average is " << (double)sum / count << endl;

}

Sentinel-Controlled Loop

#include 

#include   

#include   

using namespace std;

int main() 

{

   int numberIn;      

   int count = 0;     

   int sum = 0;       

   int max = 0;       

   int min = int_max; 

   int sentinel = -1; 

   cout << "Enter a positive integer or " << sentinel << " to exit: ";

   while (cin >> numberin && numberin != sentinel) 

  {

         if (numberIn > 0) 

        {

         ++count;

         sum += numberIn;

         if (max < numberIn) max = numberIn;

         if (min > numberIn) min = numberIn;

      } 

      else 

       {

         cout << "error: input must be positive! try again..." << endl;

      }

      cout << "Enter a positive integer or " << sentinel << " to exit: ";

   }

   cout << endl;

   cout << "Count is " << count << endl;

   if (count > 0) 

     {

      cout << "Maximum is " << max << endl;

      cout << "Minimum is " << min << endl;

      cout << fixed << setprecision(2);

      cout << "Average is " << (double)sum / count << endl;

   }

}