Răspuns :

#include<iostream>

#include<fstream>

#include<cstring>

using namespace std;

int main(){

   int litere=0, cifre=0;

   ifstream f("intrare.txt");

   char x;

   while(f>>x){

       if(strchr("0123456789", x)!=NULL) cifre++;

       if(strchr("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ", x)!=NULL) litere++;

   }

   cout<<litere<<' '<<cifre;

   return 0;

}