How to use Static or Dynamic cast for the below program

Question

Could you please help me how to call the derived class non virtual function using Static or Dynamci cast.

I want to call derive call function "test" by using static or dynamic cast only.

#include<iostream>
using namespace std;
class base
{
 public:
 virtual void call()
 {
 cout<<"I am base"<<endl;
 }
 /*void test()
 {
 cout<<"I am test"<<endl;
 }*/
};
class derive:public base
{
 public:
 void call()
 {
 cout<<"I am derive"<<endl;
 }
 void test()
 {
 cout<<"I am derived test"<<endl;
 }
};
int main()
{
 derive d;
 base *bptr = &d;
 bptr->call();
 derive* dptr = dynamic_cast<derive *>(base);
 dptr->test(); 
 return 0;
} 

While compiling, I am getting below error:

main.cpp: In function 'int main()':
main.cpp:34:47: error: expected primary-expression before ')' token
 derive* dptr = dynamic_cast<derive *>(base);
 ^ 

Could you please tell me where I have mistaken.

• JLev: Did you mean to case bptr, and not base (which is the type)?

Answer 1

Remember dynamic_cast< Type* >(ptr)

Change

derive* dptr = dynamic_cast<derive*>(base);

to

derive* dptr = dynamic_cast<derive*>(bptr);

Which gives as result :

I am derive 
I am derived test 

Because base is a type (if you use a uppercase on the first letter for all your type/class you would have noticed that you were using a type and not a variable).