C++ Exception Throw

#include <iostream> 
#include <string> 

int main() /*  ww  w  .  j  a  v  a2s  . c  o  m*/
{ 
    try 
    { 
         std::cout << "Let's assume some error occured in our program." << '\n'; 
         std::cout << "We throw an exception of type string, for example." << '\n'; 
         std::cout << "This signals that something went wrong." << '\n'; 
         throw std::string{ "Some string error" };    // throw an exception   
         // if there is an error 
    } 
    catch (const std::string& e) 
    { 
        // catch and handle the exception 
        std::cout << "String exception raised!." << '\n'; 
        std::cout << "The exception has a value of: " << e << '\n'; 
    } 
}