题解

#include<iostream>
using namespace std;
int d,b,c;
int main()
{
    string a;
    getline(cin, a);
    for(int i = 0; i < a.length(); i++)
    {
        if(a[i] == '?') break;
        else if(a[i] >= '0' && a[i] <= '9') b++;
        else if(a[i] >= 'a'&& a[i] <= 'z') d++;
        else c++;
    }
    cout << "Letters=" << d << endl;
    cout << "Digits=" << b << endl;
    cout << "Others=" << c << endl;
}