沒有匹配函數向量<string> :: push_back（stringstream＆）

Question

所以我正在寫一個TopCoder問題的算法，我得到了以下錯誤。我盡我所能消除語法錯誤，但我似乎無法弄清楚是什麼保證了這些錯誤。你能幫我解決嗎？我不是很有經驗，我正在努力學習。

tc1.cpp: In member function ‘std::vector<std::basic_string<char> > BinaryCode::decode(std::string)’: 
tc1.cpp:46:20: error: no matching function for call to ‘std::vector<std::basic_string<char> >::push_back(std::stringstream&)’ 
tc1.cpp:46:20: note: candidate is: 
/usr/include/c++/4.6/bits/stl_vector.h:826:7: note: void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = std::basic_string<char>, _Alloc = std::allocator<std::basic_string<char> >, std::vector<_Tp, _Alloc>::value_type = std::basic_string<char>] 
/usr/include/c++/4.6/bits/stl_vector.h:826:7: note: no known conversion for argument 1 from ‘std::stringstream {aka std::basic_stringstream<char>}’ to ‘const value_type& {aka const std::basic_string<char>&}’ 
make: *** [tc1] Error 1 

我寫的代碼 -

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

    using namespace std; 

    class BinaryCode 
    { 

    public: 

    vector<string> decode(string message) 
    { 

     int cntrl = 0; 
     vector<string> P; 
     bool poss = true; 
     int a = message.length(); 
     int A[a+2], B[a+2]; 
     for (int i=1; i<=a ; i++) 
     { 
     stringstream ss(message.substr(i,1)); 
     ss >> B[i]; 
     } 

     while (cntrl <2) 
     { 
     A[0] = A[a+1] = cntrl; 
     for (int i=0; i<=a; i++) 
     { 
      A[1] = B[2] - cntrl; 
      A[i+1] = B[i] - A[i] - A[i-1]; 
      if (A[i+1]<0 || A[i+1]) 
      { 
      poss = false; 
      } 
     } 
     if (!poss) 
      P.push_back("NONE"); 
     else 
     { 
     stringstream s; 
     for (int i =0; i<a+2; i++) 
      s << (char)A[i]; 
     P.push_back(s); 
     } 
     cntrl++; 
    } 
    return P; 
    } 
    }; 

    int main() 
    { 
     BinaryCode ob; 
     string str; 
     cout << "Enter the encrypted string: " << endl; 
     cin >> str; 
     vector<string> vec = ob.BinaryCode::decode(str); 
     vector<string>::iterator it = vec.begin(); 
     for (; it!= vec.end(); it++) { 
      cout << *it; 
     } 
    } 

我會很感激，如果有人能指出我在做什麼錯。

Answer 1

您正在將stringstream轉換成string s的矢量圖。變化

P.push_back(s); 

到

P.push_back(s.str());