s = input() def canCombine(set1, set2): for c in range(97, 123): lc = chr(c) uc = chr(c - 32) if (lc in set1 or uc in set1) and (lc in set2 or uc in set2): return True return False def loop(eqs): for i in range(len(eqs)): for j in range(i + 1, len(eqs)): if canCombine(eqs[i], eqs[j]): tmp = list(eqs[i]) tmp.extend(eqs[j]) eqs[i] = set(tmp) eqs.pop(j) return True return False def getResult(): cArr = [] eqs = [] isOpen = False for i in range(len(s)): c = s[i] if c == '(': isOpen = True eqs.append(set()) elif c == ')': isOpen = False if len(eqs[-1]) == 0: eqs.pop() else: if not isOpen: cArr.append(c) else: eqs[-1].add(c) while loop(eqs): pass for eq in eqs: tmp = list(eq) tmp.sort() t = tmp[0] for i in range(len(cArr)): if cArr[i] in eq: cArr[i] = t ans = "".join(cArr) return "0" if len(ans) == 0 else ans print(getResult())翻译成C++

您可以将给定的 Python 代码翻译成等效的 C++ 代码。以下是根据您提供的 Python 代码编写的对应的 C++ 代码：

#include <iostream>
#include <vector>
#include <unordered_set>
#include <algorithm>

bool canCombine(const std::unordered_set<char>& set1, const std::unordered_set<char>& set2) {
    for (int c = 97; c <= 122; c++) {
        char lc = static_cast<char>(c);
        char uc = static_cast<char>(c - 32);
        if ((set1.count(lc) > 0 || set1.count(uc) > 0) && (set2.count(lc) > 0 || set2.count(uc) > 0)) {
            return true;
        }
    }
    return false;
}

bool loop(std::vector<std::unordered_set<char>>& eqs) {
    for (size_t i = 0; i < eqs.size(); i++) {
        for (size_t j = i + 1; j < eqs.size(); j++) {
            if (canCombine(eqs[i], eqs[j])) {
                std::vector<char> tmp;
                tmp.reserve(eqs[i].size() + eqs[j].size());
                for (char c : eqs[i]) {
                    tmp.push_back(c);
                }
                for (char c : eqs[j]) {
                    tmp.push_back(c);
                }
                eqs[i] = std::unordered_set<char>(tmp.begin(), tmp.end());
                eqs.erase(eqs.begin() + j);
                return true;
            }
        }
    }
    return false;
}

std::string getResult(const std::string& s) {
    std::vector<char> cArr;
    std::vector<std::unordered_set<char>> eqs;
    bool isOpen = false;

    for (char c : s) {
        if (c == '(') {
            isOpen = true;
            eqs.push_back(std::unordered_set<char>());
        } else if (c == ')') {
            isOpen = false;
            if (eqs.back().empty()) {
                eqs.pop_back();
            }
        } else {
            if (!isOpen) {
                cArr.push_back(c);
            } else {
                eqs.back().insert(c);
            }
        }
    }

    while (loop(eqs)) {
        continue;
    }

    for (const auto& eq : eqs) {
        std::vector<char> tmp(eq.begin(), eq.end());
        std::sort(tmp.begin(), tmp.end());
        char t = tmp[0];
        for (char& c : cArr) {
            if (eq.count(c) > 0) {
                c = t;
            }
        }
    }

    std::string ans(cArr.begin(), cArr.end());
    return (ans.empty()) ? "0" : ans;
}

int main() {
    std::string s;
    std::cin >> s;
    std::cout << getResult(s) << std::endl;
    return 0;
}

请注意，这只是一个粗略的翻译，可能还需要根据实际情况进行调整和优化。希望这可以帮助您将 Python 代码转换为等效的 C++ 代码。如果有任何疑问，请随时提问。