把大写字母也给加上的非主流题解

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