c++ typeid

typeid

what is the type id of the data type in c++ ? 

sample code:

#include <iostream>
#include <string>
#include <vector>
#include <map>

using namespace std;
struct stc
{
    int key;
};
class base
{
public:
    base(){}
    ~base(){}
    int key;
};
int main(int argc, char** argv)
{
    cout<<"void        : "<<typeid(void).name()<<endl;
    cout<<"int         : "<<typeid(int).name()             <<endl;
    cout<<"int32_t     : "<<typeid(int32_t).name()<<endl;
    cout<<"uint32_t    : "<<typeid(uint32_t).name()<<endl;
    cout<<"int64_t     : "<<typeid(int64_t).name()<<endl;
    cout<<"uint64_t    : "<<typeid(uint64_t).name()<<endl;
    cout<<"double      : "<<typeid(double).name()          <<endl;
    cout<<"float       : "<<typeid(float).name()          <<endl;
    cout<<"std::string : "<<typeid(std::string).name()<<endl;
    cout<<"std::vector : "<<typeid(std::vector<int>).name()<<endl;
    cout<<"std::map    : "<<typeid(std::map<int, int>).name()<<endl;
    cout<<"struct stc  : "<<typeid(stc).name()<<endl;
    cout<<"class base  : "<<typeid(base).name()<<endl;
    return 0;
}

the result :

void        : v
int         : i
int32_t     : i
uint32_t    : j
int64_t     : l
uint64_t    : m
double      : d
float       : f
std::string : Ss
std::vector : St6vectorIiSaIiEE
std::map    : St3mapIiiSt4lessIiESaISt4pairIKiiEEE
struct stc  : 3stc
class base  : 4base

dynamic_cast

ref

http://blog.youkuaiyun.com/dbzhang800/article/details/6672591