ExceptionHandling2, C++ (gcc)

ExceptionHandling2

//g++  7.4.0
/////////////////////////////////////////////////////////////////////////////////ExceptionHandling2: C++ exception handling
//this code is created by Rezaul Hoque on June 09,2022;
//contact:jewelmrh@yahoo.com;Dhaka,Bangladesh;https://rezaulhoque.wordpress.com,https://hoquestake.blogspot.com
//note: codes shared by Rezaul Hoque on rextester are not for sale; they are created and shared to facilitate the algorithm learning process; many like Hoque use this platform to practice programming ;Rezaul hopes his contribution helps others to fine tune their learning;
/////////////////////////////////////////////////////////////////////////////
#include <iostream>
class CalCul{
int x,y;
public:

CalCul(int p,int q){x=p;y=q;}
~CalCul(){}
int getX (){return x;}
int getY(){return y;}
void add(){ 
if(x>0 && y>0){
   std::cout<<(x+y);
}
else 
{std::cout<<"Sorry, unable to finish the task!\n";}
}
void sub(){if (x>0 && y>0 &&x>y)
   std::cout<<(x-y);
else
   { std::cout<<"Sorry, unable to finish the task!\n";}
}
};
class noNeg{};
class noZero{};

int main()
{

CalCul a(-1,0);

if(a.getX()<0||a.getY()<0){
 try{
throw noNeg();
}
catch(noNeg n){
std::cout<<"Number can't be negative. \n";
}
}
  if(a.getX()==0||a.getY()==0){
     try {
         throw noZero();
          }
    catch(noZero z){
            std::cout<<"Number can't be zero. \n";
             }

}
std::cout<<"Numbers are:\n"<<a.getX()<<"\t"<<a.getY()<<"\n";
std::cout<<"Sum: ";
a.add();
std::cout<<"\n";
std::cout<<"Substraction: ";
a.sub(); 
std::cout<<"\n";
return 0;
}


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