a.cc

#include <stdio.h>

class Base {
};

class Derived : Base {
  public:
  void say() {
    printf("Derived");
  }
};

int main() {
  Base *b = new Base();
  Derived *d = static_cast<Derived *>(b);
  d->say();

  return 0;
}

output.txt

> cl a.cc
Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 16.00.30319.01 for 80x86
Copyright (C) Microsoft Corporation.  All rights reserved.

a.cc
Microsoft (R) Incremental Linker Version 10.00.30319.01
Copyright (C) Microsoft Corporation.  All rights reserved.

/out:a.exe
a.obj
> ./a.exe
Derived