题解

#include<bits/stdc++.h>
using namespace std;
int main(){
    string s;
    int l=0,o=0,d=0;
    getline(cin,s);
    for(int i=0;i<s.length()-1;i++){
        if(s[i]>='a'&&s[i]<='z'||s[i]>='A'&&s[i]<='Z')l++;
        else if(s[i]>='0'&&s[i]<='9')d++;
        else o++;
    }printf("Letters=%d\nDigits=%d\nOthers=%d\n",l,d,o);
    return 0;
}