Demonstrate two exception handlers - C++ Class

C++ examples for Class:Exception Class

  1. HOME
  2. C++
  3. Class
  4. Exception Class

Description

Demonstrate two exception handlers

Demo Code

#include <iostream>
using namespace std;
const int MAX = 3;              //stack holds 3 ints
class Stack/*  w w w . jav  a 2 s.  co m*/
{
   private:
       int st[MAX];              //stack: array of integers
       int top;                  //index of top of stack
   public:
   class Full { };           //exception class
   class Empty { };          //exception class
   Stack()                   //constructor
   { top = -1; }
   void push(int var)        //put number on stack
   {
      if(top >= MAX-1)       //if stack full,
         throw Full();       //throw Full exception
      st[++top] = var;
   }
   int pop()                 //take number off stack
   {
      if(top < 0)            //if stack empty,
         throw Empty();      //throw Empty exception
      return st[top--];
   }
};
int main()
{
   Stack s1;
   try
   {
      s1.push(11);
      s1.push(22);
      s1.push(33);
      //    s1.push(44);                        //oops: stack full
      cout << "1: " << s1.pop() << endl;
      cout << "2: " << s1.pop() << endl;
      cout << "3: " << s1.pop() << endl;
      cout << "4: " << s1.pop() << endl;  //oops: stack empty
   }
   catch(Stack::Full)
   {
      cout << "Exception: Stack Full" << endl;
   }
   catch(Stack::Empty)
   {
      cout << "Exception: Stack Empty" << endl;
   }
   return 0;
}

Result


Related Tutorials