@[ikun_jntm](/user/986180) 上面的s怎么就变成a了还有正数情况仍然要i>=0然后是a[strlen(a)-1]!=0,如果输入的数字就是0应该怎么办
by rnfmabj5114 @ 2023-06-17 19:01:50
@[ikun_jntm](/user/986180)
```cpp
#include<bits/stdc++.h>
using namespace std;
long long int n,a=0;
int main(){
cin>>n;
if(n<0){
cout<<"-";
n=-n;
}
while(n!=0){
a=a*10+n%10;
n/=10;
}
cout<<a;
}
```
求关
by zhouzihe @ 2023-06-17 19:15:18
@[zhouzihe](/user/798537) 谢谢大佬，我真的太蒟蒻了
by ikun_jntm @ 2023-06-17 20:24:29
@[zhouzihe](/user/798537) 已关注
by ikun_jntm @ 2023-06-17 20:24:56
@[liyong5114](/user/917683) 谢谢大佬，我真的太蒟蒻了
by ikun_jntm @ 2023-06-17 20:25:16