class Solution {
public:
    int isPrefixOfWord(string sentence, string searchWord) {
        vector<string> v;
         string a="";
  for(int i=0;i<sentence.size();i++){
    if(!isspace(sentence[i])){
        a+=sentence[i];
    }
    else{
        v.push_back(a);
        a="";
    }
  }
  v.push_back(a);
  int flag=-1;
  for(int i=0;i<v.size();i++){
                string a=v[i];
                if(a[0]==searchWord[0]){
                                int k=i;
                                for(int j=0;j<searchWord.size();j++){
                                        if(searchWord[j]!=a[j]){
                                                flag=-1;
                                                break;
                                        }
                                        else{
                                                flag=i;
                                        }
                                }
                                if(flag==k){
                                        return i+1;
                                        break;
                                }


                }



}
        return -1;
    }
};