132.try throw catch介绍

 #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();
 }