The exception structure has been added

NOTE : -

THIS CONTENT IS NOT ORIGINAL

11. The exception structure has been added

You know the classical control structures of C: for, if, do, while, switch... C++ adds one more control structure named EXCEPTION:

using namespace std;
#include 
#include 

int main ()
{
  int a, b;

  cout << "Type a number: ";
  cin >> a;
  cout << endl;

  try
  {
     if (a > 100) throw 100;
     if (a < 10)  throw 10;
     throw a / 3;
  }
  catch (int result)
  {
     cout << "Result is: " << result << endl;
     b = result + 1;
  }

  cout << "b contains: " << b << endl;

  cout << endl;

  // another example of exception use:

  char zero []     = "zero";
  char pair []     = "pair";
  char notprime [] = "not prime";
  char prime []    = "prime";

  try
  {
     if (a == 0) throw zero;
     if ((a / 2) * 2 == a) throw pair;
     for (int i = 3; i <= sqrt (a); i++)
     {
        if ((a / i) * i == a) throw notprime;
     }
     throw prime;
  }
  catch (char *conclusion)
  {
     cout << "The number you typed is "<< conclusion << endl;
  }

  cout << endl;

  return 0;
}

Output

Type a number: 5 Result is: 10 b contains: 11 The number you typed is prime

BIBILOGRAPHY / REFERENCE : - http://www.4p8.com/eric.brasseur/cppcen.html