To get a trial key
fill out the form below
Team License (a basic version)
Enterprise License (an extended version)
* By clicking this button you agree to our Privacy Policy statement

Request our prices
New License
License Renewal
--Select currency--
USD
EUR
RUB
* By clicking this button you agree to our Privacy Policy statement

Free PVS-Studio license for Microsoft MVP specialists
* By clicking this button you agree to our Privacy Policy statement

To get the licence for your open-source project, please fill out this form
* By clicking this button you agree to our Privacy Policy statement

I am interested to try it on the platforms:
* By clicking this button you agree to our Privacy Policy statement

Message submitted.

Your message has been sent. We will email you at


If you haven't received our response, please do the following:
check your Spam/Junk folder and click the "Not Spam" button for our message.
This way, you won't miss messages from our team in the future.

>
>
>
The function of printing an expression'…

The function of printing an expression's type

Jul 20 2009
Author:

I very often meet debates in forums on what type this or that expression will have. So I decided to make a little note in the blog to refer to this.

An example of code printing the type of an expression and information about it:

#include <iostream>
using namespace std;
template <typename T>
void PrintTypeInfo(char const* description, T)
{
  const type_info &info = typeid(T);
  cerr << "\"" << description << "\":"
       << " type = " << info.name()
       << "; sizeof = " << sizeof (T)
       << "; alignof = " << __alignof (T)
       << endl;
}
int _tmain(int, _TCHAR *[])
{
  char c1 = 0, c2 = 0;
  PrintTypeInfo("char + char", c1 + c2);
}

The result:

"char + char": type = int; sizeof = 4; alignof = 4

Comments (0)

Next comments
This website uses cookies and other technology to provide you a more personalized experience. By continuing the view of our web-pages you accept the terms of using these files. If you don't want your personal data to be processed, please, leave this site.
Learn More →
Accept