1、

std：

1 #include 
     
       2 #include
      
        // for cerr 3 //#include 
       
         // for what ? 4 using namespace std; 5  6  7 int _tmain(int argc, _TCHAR* argv[]) 8 { 9     string s1("UIPower");10     char chA = s1[2];11 12     try13     {14         char chD = s1.at(300);15     }16     catch(...)17     {18         printf("err\n");19     }20 21     printf("\n");22     try23     {24         char chD = s1.at(300);25     }26     catch(std::out_of_range &ex)27     {28         std::cerr << ex.what() << " Line:" << __LINE__ << " File:" << __FILE__ << endl;29     }30 31     printf("\n");32     try33     {34         char chD = s1.at(300);35     }36     catch(std::exception &ex)37     {38         std::cerr << ex.what() << " Line:" << __LINE__ << " File:" << __FILE__ << endl;39     }40 41     system("pause");42     return 0;43 }
       
      
     

 

2、

 

C