A sample using ternary operators

test5.cpp

#include <stdio.h>
#include <string>
#include <typeinfo>
#include <cxxabi.h>

struct Super{
  virtual void hello(void){
    printf("I am Super.\n");
  }
};

struct Sub : public Super{
  void hello(void){
    printf("I am Sub.\n");
  }
};

void
test(int a, int b){
  auto *c = (a > b? new Sub() : new Super());
  const std::type_info& id = typeid(c);
  int stat;
  char *class_name = abi::__cxa_demangle(id.name(),0,0,&stat);
  printf("-----\n");
  printf("My class is %s\n",class_name);
  c->hello();
  free(class_name);
  delete c;
}

int
main(void){
  test(1,2);
  test(2,1);
}

$ g++ test5.cpp
$ ./a.out
-----
My class is Super*
I am Super.
-----
My class is Super*
I am Sub.