#include <iostream>

 using namespace std;

 //try尝试执行,抛出throw,throw之后语句不再执行

 //catch处理throw的异常

 void main()

 {

     float fl1, fl2;

     cin >> fl1 >> fl2;

     //尝试执行,抛出类型检测

     try

     {

         if (fl2 < 0.0000001)

         {

             throw ;

         }

         else if (fl1 < 0.000001)

         {

             throw ;

         }

         float fl3 = fl1 / fl2;

         cout << fl3 << endl;

     }

     //定义类型,检测判断是什么错误

     catch (int code)

     {

         if (code == )

         {

             cout << "fl2太小" << endl;

         }

         else if (code == )

         {

             cout << "fl2太小" << endl;

         }

     }

     cin.get();

     cin.get();

 }