题解

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