boost::lexical_cast常见用法详解之万能转换

#include <iostream>  
#include <boost/lexical_cast.hpp>  
  
using namespace std;  
using namespace boost;  
  
int main()  
{  
    string s = "123";  
    int a = lexical_cast<int>(s);  
    double b = lexical_cast<double>(s);  
  
    printf("%d/r/n", a + 1);  
    printf("%lf/r/n", b + 1);  
  
    try 
    {  
	//为了防止转化错误使用一个错误的例子
        int c = lexical_cast<int>("wrong_number");  
    }  
    catch(bad_lexical_cast & e)  
    {  
        printf("%s/r/n", e.what());  
    }  
    return 0;
}