Sentence Similarity

class Solution {
public:
    bool areSentencesSimilar(vector<string>& words1, vector<string>& words2, vector<pair<string, string>> pairs) {
        bool res;
        unsigned int cpt=0, cptPairs;
        pair<string, string> curPair1, curPair2;
        res=(words1.size()==words2.size());
        while(res&&cpt<words1.size()){
            if(0==words1[cpt].compare(words2[cpt])){
                cpt++;
                continue;
            }else{
                cptPairs=0;
                curPair1={words1[cpt], words2[cpt]};
                curPair2={words2[cpt], words1[cpt]};
                while(cptPairs<pairs.size()&&curPair1!=pairs[cptPairs]&&curPair2!=pairs[cptPairs])
                    {cptPairs++;}
                if(cptPairs==pairs.size())
                    {res=false;}
                cpt++;
            }
        }

        return res;
    }
};