ans没有初始化为0
by FlowNews @ 2019-07-20 17:43:29
@[zhaowangji](/space/show?uid=164840) ~~你的程序有问题~~
by FlowNews @ 2019-07-20 17:45:33
@[刘谅闻](/space/show?uid=217795) 定义在主程序外。。。。
by zhaowangji @ 2019-07-20 17:54:42
@[刘谅闻](/space/show?uid=217795) 能不能看好了。。。
by zhaowangji @ 2019-07-20 17:55:27
有负数，负数%2可能为-1
by swiftc @ 2019-07-20 18:01:58
@[zhaowangji](/space/show?uid=164840)
by swiftc @ 2019-07-20 18:02:31
```cpp
#include<bits/stdc++.h>
using namespace std;
int main(){
int a,b,ans=0;
cin>>a>>b;
for(int i=a;i<=b;i++){
if(i%4==0||i%2==1||i%2==-1)ans++;
}
cout<<ans<<endl;
return 0;
}
```
这就对了
by swiftc @ 2019-07-20 18:03:23
第一个测试点的输入：
-99999 10
by 糪眾脦颰罷 @ 2019-07-20 18:03:27
而且-1%2=-1
by 糪眾脦颰罷 @ 2019-07-20 18:04:10
会出现负数
by lyb666666 @ 2019-07-20 18:05:14