Browse DevX
Sign up for e-mail newsletters from DevX

Tip of the Day
Home » Tip Bank » C++
Language: C++
Expertise: All
May 11, 1999



Building the Right Environment to Support AI, Machine Learning and Deep Learning

Applying Typeid to Fundamental Types and Non-Polymorphic Objects

You can use typeid to retrieve the type information of non-polymorphic objects and fundamental types. However, the result in this case refers to the static type of the object rather than its dynamic type. Note however, that applying dynamic_cast to fundamental types or non-polymorphic classes is an error.
#include <iostream>
#include <string>
using namespace std;

typedef int I;
void fundamental()
  cout<<typeid(I).name()<<endl; //display 'int'
void non_polymorphic()
  cout<<typeid(string).name()<<endl; //display the complete type of std::string
Danny Kalev
Comment and Contribute






(Maximum characters: 1200). You have 1200 characters left.



Thanks for your registration, follow us on our social networks to keep up-to-date