RTTI Question: typeid() for structures

[Generic Usenet Account]

My C++ compiler (gcc 3.3.1) is prefixing a number in front on a
user-defined structure when I invoke typeid() on it. Can anyone
explain why? [Look at the funny thing I have to do in the macro
definition to get rid of that]

Source code follows:
Bhat

////////////////////////////////////////////////
#include <iostream>
#include <typeinfo>
#include <strings.h>

using namespace std;

#define TYPEID(x) cout << #x << ": " << strpbrk(typeid(x).name(),
"_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ") << endl;


struct sampleStruct
{
char c;
short s;
int i;
};

int
main()
{
TYPEID(sampleStruct);

sampleStruct whatsmytype;
TYPEID(whatsmytype);
}

 

[Dave]

The C++ implementation may return anything it wants when name() is called.
It could be a human-friendly name, a mangled name, a curse word, an empty
string, your mothers maiden name, etc...

 

[Dave]

My C++ compiler (gcc 3.3.1) is prefixing a number in front on a
user-defined structure when I invoke typeid() on it. Can anyone
explain why? [Look at the funny thing I have to do in the macro
definition to get rid of that]

Source code follows:
Bhat

////////////////////////////////////////////////
#include <iostream>
#include <typeinfo>
#include <strings.h>

using namespace std;

#define TYPEID(x) cout << #x << ": " << strpbrk(typeid(x).name(),
"_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ") << endl;


struct sampleStruct
{
char c;
short s;
int i;
};

int
main()
{
TYPEID(sampleStruct);

sampleStruct whatsmytype;
TYPEID(whatsmytype);
}

The C++ implementation may return anything it wants when name() is called.
It could be a human-friendly name, a mangled name, a curse word, an empty
string, your mothers maiden name, etc...