C++ 代码
#include <iostream>
#include <string>
using namespace std;
int main(){
string s;
getline(cin, s);
int len = s.size();
int cnt = 0, max = 0,idx = 0;
string res;
for(int i = 0; i < len; i ++){
if(s[i] == ' ' || s[i] == '.'){
if(cnt > max) max = cnt,idx = i - cnt;
cnt = 0;
}
else{
cnt ++;
}
if(s[i] == '.')
break;
}
cout << s.substr(idx, max) ;
// cout << max ;
return 0;
}
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