C++ 拋出異常

#include <iostream>
using namespace  std;

int  division(int a, int b)  //傳入2個int型變量若被除數或者除數為0 則拋出異常否則返回結果
{
    if (a == 0)
    {
        cout << "拋出異常" << endl;
        throw 100;
    }
    else if (b == 0)
    {
        cout << "拋出異常" << endl;
        throw 101;
    }
    return a / b;
}
int main()
{    
    run:
    try
    {
        while (1)  //循環輸入a和b  並輸出
        {
            cout << "請輸入兩個正整數並執行相除操作" << endl;
            int a, b;
            cin >> a >> b;
            cout<<"兩個數相除結果為:"<<division(a, b)<<endl;
        }
    }
    catch (const  int m_num)
    {
        if (m_num == 100)
        {
            cout << "被除數不能為0" << endl;
            cout << "即將重新輸入........" << endl;
            goto run;//返回頂部重新處理
        }
        else if (m_num == 101)
        {
            cout << "除數不能為0" << endl;
            cout << "即將重新輸入........" << endl;
            goto run; //返回頂部重新處理
        }
    }
    return 0;
}