一只题解

#include<iostream>
#include<cstdio>
#include<cstring>
using namespace std;
int main(){
    char a[10000];
    int l=0,d=0,o=0;
    fgets(a,10000,stdin);
    for(int i=0;i<=strlen(a)&&a[i]!='?';i++){
        if(a[i]>='a'&&a[i]<='z')l++;
        else if(a[i]>='0'&&a[i]<='9')d++;
        else o++;
    }
    cout<<"Letters="<<l<<endl;
    cout<<"Digits="<<d<<endl;
    cout<<"Others="<<o<<endl;
    return 0;
}