题解

#include<bits/stdc++.h>
using namespace std;
int main(){
string s;
getline(cin,s);
long long a=0,b=0,c=0;
for(int i=0;i<s.size();i++){
if(s[i]=='?')break;
if(s[i]<='Z'&&s[i]>='A'||s[i]<='z'&&s[i]>='a')a++;
else if(s[i]<='9'&&s[i]>='0')b++;
else c++;
}
cout<<"Letters="<<a<<endl<<"Digits="<<b<<endl<<"Others="<<c<<endl;
return 0;
}