20110728qianqingwen @ 2022-03-05 10:27:04
#include <bits/stdc++.h>
using namespace std;
int main()
{
int a,b;
char n;
cin>>a>>b>>n;
switch(n)
{
case '+':
cout<<a+b;
break;
case '-':
cout<<a-b;
break;
case '*':
cout<<a*b;
break;
case '/':
cout<<a/b;
break;
case '%':
cout<<a%b;
break;
default:
cout<<"wrong";
}
return 0;
}
by Justin090102 @ 2022-03-05 10:27:48
有
by Justin090102 @ 2022-03-05 10:28:56
@20110728qianqingwen 你这wrong
是什么玩意 题目里面哪来的wrong
by CarroT1212 @ 2022-03-05 10:36:24
打代码得仔细看题目啊,评测机是不会按照你的想法来的
case '/':
cout<<a/b;
break;
case '%':
cout<<a%b;
break;
default:
cout<<"wrong";
改为:
case '/':
if (b!=0) cout<<a/b;
else cout<<"Divided by zero!";
break;
default:
cout<<"Invalid operator!"
如果出现除数为
0 的情况,则输出:如果出现无效的操作符(即不为 +,-,*,/ 之一),则输出:
Invalid operator!
。
%也算无效运算符。