C++ program to demonstrate exception handling 1

#include<iostream>
using namespace std;
int calculate(int x, int y, int z)
{
return(z/(x-y));
}
int main()
{
int x,y,z;
cout<<"Enter the values of x , y & z\n";
cin>>x>>y>>z;
try
{
if(x>y)
{
int r=calculate(x,y,z);
cout<<"\nResult is :"<<r<<endl;
}
else if(x<y) throw 1.0;
else throw (x-y);
}
catch(int a)
{
cout<<"\nDivision by zero is not possible";
cout<<"\nProvide x,y such that x!=y";
}
catch(...)
{
cout<<"The result is negative";
}
return 0;
}