Maajobblol

#include <iostream>
#include <algorithm>
#include <vector>
#include <string>

using namespace std;

string CharsToString(char a, char b, char c, char d);

int main(int argc, char** argv) {

    setlocale(LC_ALL,"");
    char abcd[4] = {'a','b','c','d'};
    vector<char> cv;
    vector<string> csv;
    int sum = 0;

    for(char a='a'; a<='d'; ++a) {

        for(char b='a'; b<='d'; ++b) {

            for(char c='a'; c<='d'; ++c) {

                for(char d='a'; d<='d'; ++d) {

                    sum++;
                    string newS = CharsToString(a,b,c,d);
                    csv.push_back(newS);
                    cout << newS << endl;

                }
            }
        }
    }

    if ( find(csv.begin(), csv.end(), "cccc") != csv.end() )
   cout << "Létezik! " << sum << endl;
else
   cout << "Nem létezik!" << endl;



    return 0;
}

string CharsToString(char a, char b, char c, char d){
    string aS;
    aS.push_back(a);
    string bS;
    bS.push_back(b);
    string cS;
    cS.push_back(c);
    string dS;
    dS.push_back(d);

    return aS+bS+cS+dS;
}