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 1;
        }
        else if (fl1 < 0.000001)
        {
            throw 2;
        }

        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 == 1)
        {
            cout << "fl2太小" << endl;
        }
        else if (code == 2)
        {
            cout << "fl2太小" << endl;
        }
    }

    
    cin.get();
    cin.get();
}