Решение задачи String 13

#include <bits/stdc++.h>

using namespace std;

int main()
{
    int k = 0;
    string s;
    cin >> s;
    for(int i = 0; i < s.size(); ++i){
       if(s[i] >= '1' && s[i] <= '9')
        ++k;
    }
    cout << k;
    return 0;
}

# -*- coding: utf-8 -*-
import random
import string

ru_letters = u"абвгдеёзийклмнопрстуфхъыьэАБВГДЕЁЗИЙКЛМНОПРСТУФХЪЫЬЭ"
en_letters = u"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
tj_letters = u"ғӣқӯҳҷҒӢҚӮҲҶ"

N = random.randrange(1,10)
s_ru = random.sample(ru_letters, N)
print("RU:",s_ru)

N = random.randrange(1,10)
s_en = random.sample(en_letters, N)
print("EN:",s_en)

N = random.randrange(1,10)
s_tj = random.sample(tj_letters, N)
print("TJ:",s_tj)

N = random.randrange(1,10)
s_digit = random.sample(string.digits, N)
print("Digits:",s_digit)

s = s_ru + s_en + s_tj + s_digit + [' ',' ']
#print("Random:",s)
random.shuffle(s)
s = "".join(s)
print(s)

digits = sum(c.isdigit() for c in s)
print("Number of Digits:",digits)
									

program String13;
var
  i,Num:integer;
  S:string;
 
begin
 Write('S:');
 Readln (S);
 
 Num:=0;
 for i:=1 to Length(S) do
  if (ord(S[i]) in  [48..57]) then inc(Num);
 
 Writeln(Num);
end.