@[liaochenzhe0422](/user/793652) 需要用字符串 。
``` c++
#include<bits/stdc++.h>
using namespace std;
int main()
{
string s;
cin>>s;
int n=s.length();
for(int i=0;i<n;i++)
{
if(s[i]=='.')
{
break;
}
cout<<s[i];
}
cout<<endl;
return 0;
}
```
by __int1024 @ 2024-04-25 19:59:46
@[__int1024](/user/1208546)
不一定只能用字符串吧，我帮楼主改了1个地方就过了
```
#include<bits/stdc++.h>
using namespace std;
int main()
{
long long a,i;
char b[10000];
cin>>b;
for(i=0;i<strlen(b);i++)
{
if(b[i]!='.')cout<<b[i];
if(b[i]=='.')break;
}
cout<<"\n";
}
```
by jury01 @ 2024-04-25 20:10:13
@[liaochenzhe0422](/user/793652)
by jury01 @ 2024-04-25 20:10:48
@[jury01](/user/918478) emm...
by __int1024 @ 2024-04-25 20:11:52
过了,谢谢大佬
by liaochenzhe0422 @ 2024-04-29 16:00:32