#include <iostream>

using namespace std;

void BadFunctionCall(void) {
   throw 20;
}

class PtrUsrT {
    public:
      PtrUsrT(size_t s) {
         size = s;
         int * data = nullptr;
         data =  new int[s];

         // some computations
         BadFunctionCall();
         // other computations
         
         delete []  data;
         return ;
      }

    private:  
       size_t size;
        
};

int main() {
   try {
     PtrUsrT p(4); 
   } catch (...) {
     cout << "Caught an error " << endl;
   }
   
   return 0;
}