- >添加到載體...無限循環

-2

class Interacao{ 
    vector<string> v_line; 
... 
public: 
    void comando_load(istringstream & iss); 
}; 

void Interacao::comando_load(istringstream & iss){ 
v_line.empty(); 
string line; 
string fname = "ini.txt"; 
int it = 0; 

ifstream file(fname); 

while (!file.eof()){ 
    it++; 
    getline(file, line); 
    cout << line << endl; //this works like it should if the line below is commented 
    v_line.push_back(line); //this keeps adding line to the vector infinitely  
} 
file.close(); 
}

我試圖做的是從一個文本文件（而不是在控制檯輸入它們）讀取文件，將它們放置在一個字符串矢量然後用一些修改（iss.str（line），getline（cin，line）disabled-> flag）使用相同的控制檯插入命令代碼讀取它們，但它不會停止向該向量添加行...- >添加到載體...無限循環

對不起，很不清楚，太混淆了，無法清楚地識別/解釋問題。

預先感謝您， -eC。

編輯：下面

class Interacao{ 
    Consola c; 
    vector<string> v_linha; 
public: 

}; 


void Interacao::comando_load(istringstream & iss){ 
    v_linha.empty(); 
    string linha; 
    string nome_fich = "ini.txt"; 

    ifstream fich(nome_fich); 

    while (!fich.eof()){ 
     getline(fich, linha);   
     v_linha.push_back(linha); //adds command from file to vector 
    } 
    fich.close(); 
} 

void Interacao::Le_Comando(){ 

    string linha; 
    Populacao* pop_jogador = nullptr; 
    bool flg_pop_jgdr = 0; 
    unsigned int cont = 0; 

    unsigned int it = 0; 
    int iComando = 0; 
    int iCalls = 0; 

    do{ 
     c.gotoxy(3, 56); //error: this goes to a specific place on the console, it's on infinite cycle thus not allowing any action 

     if (linha.length() != 0) 
      c.clrcmd(linha.length()); 

     while (it < v_linha.size()){ 
      linha = v_linha[it]; 
      it++; 
      break; 
     } 

     cont = v_linha.size(); //if the vector is not empty, disables cin, reads from vector instead instead cont = EOF 
     if (cont == 0){ 
      getline(cin, linha); 
     } 

     if (cont > 0){ //has commands to read in vector, read 1 command, decreases cont 
      cont--; 
     } 

     istringstream iss; 
     iss.str(linha); //command 

     iComando = escolheComando(iss); //converts string to int for the switch 
     switch (iComando){ 
     case 0: //sair (exit) 
      cout << "Terminou o jogo. A desligar..."; 
      exit(1); break; 
     case 1: //load 
      comando_load(iss); 
      break; 

     } 
    } while (iComando != 0); 
}

來源

2014-12-27 epiClowN

你沒有正確使用'getline'。 – 2014-12-27 16:15:35

@epiClowN什麼是在無限循環內輸出？ – 2014-12-27 16:43:28

另請注意，while（！file.eof（））{'：http://stackoverflow.com/questions/5605125/why-is-iostreameof-inside-a-loop-condition-considered-wrong – 2014-12-27 16:52:44

getline「滿」代碼失敗在最後輸入線和設置故障位，而不是ficheof。結論：從不使用while (!file.eof()){...}而沒有在循環內部進行額外的測試，否則會遇到麻煩。

來源

2014-12-27 17:14:37 zkoza

有任何建議爲額外的測試？我在C++中缺乏處理文件的經驗，謝謝。 – epiClowN 2014-12-27 17:21:30

http://stackoverflow.com/questions/7868936/read-file-line-by-line – zkoza 2014-12-27 17:44:49

我不是一個很聰明的人，我必須承認，發現了問題，那就是：

do{ 
cont = v_linha.size(); //<<<<<<<< can't be inside the loop.... 
    if (cont == 0){ 
     getline(cin, linha); 
    } 

    if (cont > 0){ //has commands to read in vector, read 1 command, decreases cont 
     cont--; //<<<<<<<<<< ....for this to work properly... 
    } 
}while(...);

固定的，非常感謝你，雖然。

來源

2014-12-27 17:42:09 epiClowN

- >添加到載體...無限循環

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