C++ : printing wired string

Question

我正在将 string 转换为 char 数组，然后再转换回 string 并转换为 vector .当我尝试打印时，我得到了这个:

this
is
the
sentence iuִִ[nu@h?(h????X

还有更多。这是代码:

int main(int argc, char *argv[]){
    string s ="this is the sentence";
    char seq[sizeof(s)];
    strcpy(seq, "this is the sentence");
    vector<string> vec = split(seq);
    printWords(vec);

    return 0;
}

这是 func.cpp 文件。一个函数将 char 拆分为字符串 vector ，另一个是打印:

vector<string> split(char sentence[]){
    vector<string> vecto;
    int i=0;
    int size= strlen(sentence);
    while((unsigned)i< size){
        string s;
        char c =' ';
        while(sentence[i]!=c){
            s=s+sentence[i];
            i+=1;
        }
        vecto.push_back(s);

        i+=1;
    }

    return vecto;
}

void printWords(vector<string> words){
    int i=0;
    while ((unsigned)i<words.size()){
        string s = words.at(i);
        cout << words.at(i) << endl;
        i+=1;
    }
}

Answer 1

理解上面的答案后，尝试一种不太容易出错的风格，更像这样(C++11):

#include <iostream>
#include <sstream>
#include <vector>

using namespace std;
int main(){
  string s{"this is the sentence"};
  stringstream sStream;
  sStream<<s;
  string word;
  vector<string> vec;
  while(sStream >> word){
    vec.emplace_back(word);
  }
  for(auto &w : vec){
    cout << "a word: " << w <<endl;
  }
}