#include "operation.h"
#include <iostream>
#include<vector>
#include<cassert>
#define MAX 40
using namespace std;


int main()
{
	operation oper;
    cout<<"請輸入兩個數"<<endl;
   char test1[MAX],test2[MAX];
   for(int i=0;i<MAX;i++){
     test1[i]=test2[i]=0;
   
   }
   char k;
    i=0;
   while((k=getchar())!=' '){
	test1[i]=k;
   i++;
}
   assert(i<40);
	char c;
    cin>>c;
	i=0;
	while((k=getchar())!='\n'){
	test2[i]=k;
   i++;
}
	assert(i<40);
	if(c=='*')	oper.Mul(strrev(test1),strrev(test2));
	else if(c=='-'){
					oper.minu(strrev(test1),strrev(test2)); 
					cout<<endl;
	}
	else if(c=='+'){
					oper.ad(strrev(test1),strrev(test2));
					cout<<endl;
	}
    
}