User_Defined_Exception.cpp

#include<iostream>
using namespace std;
class StackOverFlow:exception{};
class StackUnderFlow:exception{};
class Stack
{
    private:
         int *stk;
         int top=-1;
         int size;
    public:
         Stack(int sz)
         {
             size=sz;
             stk=new int[size];
         }
         void push(int x)
         {
             if(top==size-1)
             {
                 throw StackOverFlow();
             }
             top++;
             stk[top]=x;
         }
         int pop()
         {
             if(top==-1)
             {
                 throw StackUnderFlow();
             }
             return stk[top--];
         }
};
int main()
{
    Stack s(5);
    s.push(2);
    s.push(3);
    s.push(4);
    s.push(10);
    s.push(9);
    s.push(8);
}