は、どのように私はそれをコンパイルしようとすると、しかし、私はエラーの束を取得し、私はC++での経験がないし、おそらく、デバッグなしで実行することができるはずのコードを与えられたC++

Question

に次のエラーメッセージを解釈します。私はちょうどそれをデバッグを開始する方法についていくつかの指示が必要です、どんな助けていただければ幸いです。ここではエラーメッセージは次のとおりです。エラーメッセージに関連する

mpicc -c -O3 curvilinear_grid.cpp 
In file included from parameters.h:12:0, 
       from curvilinear_grid.h:13, 
       from curvilinear_grid.cpp:6: 
parameter_file_parser.h: In member function ‘int PARAMETER_FILE_PARSER<T>::Parse_Parameter_File()’: 
parameter_file_parser.h:86:13: error: invalid use of incomplete type ‘std::ifstream {aka struct std::basic_ifstream<char>}’ 
/usr/include/c++/4.6/iosfwd:113:11: error: declaration of ‘std::ifstream {aka struct std::basic_ifstream<char>}’ 
parameter_file_parser.h:92:29: error: no matching function for call to ‘getline(std::ifstream&, std::string&)’ 
parameter_file_parser.h:92:29: note: candidates are: 
/usr/include/c++/4.6/bits/basic_string.tcc:1070:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::getline(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&, _CharT) 
/usr/include/c++/4.6/bits/basic_string.h:2734:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::getline(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&) 
parameter_file_parser.h:95:21: error: no match for ‘operator>>’ in ‘tokens >> std::ws’ 
parameter_file_parser.h:95:21: note: candidates are: 
/usr/include/c++/4.6/bits/basic_string.tcc:998:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&) 
/usr/include/c++/4.6/bits/istream.tcc:957:5: note: template<class _CharT2, class _Traits2> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT2*) 
/usr/include/c++/4.6/bits/istream.tcc:925:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&) 
/usr/include/c++/4.6/istream:709:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char&) 
/usr/include/c++/4.6/istream:714:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char&) 
/usr/include/c++/4.6/istream:756:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char*) 
/usr/include/c++/4.6/istream:761:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char*) 
parameter_file_parser.h:95:51: error: no matching function for call to ‘getline(std::istringstream&, std::string&, char)’ 
parameter_file_parser.h:95:51: note: candidates are: 
/usr/include/c++/4.6/bits/basic_string.tcc:1070:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::getline(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&, _CharT) 
/usr/include/c++/4.6/bits/basic_string.h:2734:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::getline(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&) 
parameter_file_parser.h:96:14: error: no match for ‘operator>>’ in ‘tokens >> std::ws’ 
parameter_file_parser.h:96:14: note: candidates are: 
/usr/include/c++/4.6/bits/basic_string.tcc:998:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&) 
/usr/include/c++/4.6/bits/istream.tcc:957:5: note: template<class _CharT2, class _Traits2> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT2*) 
/usr/include/c++/4.6/bits/istream.tcc:925:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&) 
/usr/include/c++/4.6/istream:709:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char&) 
/usr/include/c++/4.6/istream:714:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char&) 
/usr/include/c++/4.6/istream:756:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char*) 
/usr/include/c++/4.6/istream:761:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char*) 
parameter_file_parser.h:96:41: error: no matching function for call to ‘getline(std::istringstream&, std::string&)’ 
parameter_file_parser.h:96:41: note: candidates are: 
/usr/include/c++/4.6/bits/basic_string.tcc:1070:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::getline(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&, _CharT) 
/usr/include/c++/4.6/bits/basic_string.h:2734:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::getline(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&) 
parameter_file_parser.h:107:8: error: invalid use of incomplete type ‘std::ifstream {aka struct std::basic_ifstream<char>}’ 
/usr/include/c++/4.6/iosfwd:113:11: error: declaration of ‘std::ifstream {aka struct std::basic_ifstream<char>}’ 
make: *** [curvilinear_grid.o] Error 1 

コード：

// File: parameter_file_parser.h 
// Desc: Parser of the parameter input file to change default parameter values 

#ifndef __PARAMETER_FILE_PARSER__ 
#define __PARAMETER_FILE_PARSER__ 

#include <iostream> 
#include <map> 
#include <string> 
#include <algorithm> 

template<class T=double> 
class PARAMETER_FILE_PARSER 
{ 
public: 
    PARAMETER_FILE_PARSER(string filename) : parameter_filename(filename) 
    {param_map=NULL;} 

    ~PARAMETER_FILE_PARSER() {if(param_map) delete param_map;} 

    int Parse_Parameter_File(); 

    bool Get_Value(string key, int& value) 
    { 
    if(!param_map) return false; 
    map<string,string>::iterator i = (*param_map).find(key); 
    if(i != (*param_map).end()){ 
     value = atoi(i->second.c_str()); 
     return true; 
    }else return false; 
    } 

    bool Get_Value(string key, double& value) 
    { 
    if(!param_map) return false; 
    map<string,string>::iterator i = (*param_map).find(key); 
    if(i!=(*param_map).end()){ 
     value = atof(i->second.c_str()); 
     return true; 
    }else return false; 
    } 

    bool Get_Value(string key, string& value) 
    { 
    if(!param_map) return false; 
    map<string,string>::iterator i = (*param_map).find(key); 
    if(i!=(*param_map).end()){ 
     string raw_val = i->second; 
     size_t ip1,ip2; 
     ip1 = raw_val.find('"'); 
     ip2 = raw_val.find('"',ip1+1); 
     if(ip1!=string::npos && ip2!=string::npos){ 
    value = raw_val.substr(ip1+1,ip2-ip1-1); 
    return true; 
     }else return false; 
    }else return false; 
    } 
/* 
    bool Get_Value(string key, bool& value) 
    { 
    if(!param_map) return false; 
    map<string,string>::iterator i = (*param_map).find(key); 
    if(i!=(*param_map).end()){ 
     switch(i->second){ //make lowercase 
     case "true": value = true;break; 
     case "false": value = false;break; 
     } 
     return true; 
     }else return false; 
    }else return false; 
    } 
*/ 
    bool Processed() {return param_map!=NULL;} 

private: 
    map<string, string> *param_map; 
    string parameter_filename; 
}; 
//***************************************************************************** 
// Parsing parameter_filename and populating the parameters map 
//***************************************************************************** 
template<class T> 
int PARAMETER_FILE_PARSER<T>::Parse_Parameter_File() 
{ 
    ifstream pfile(parameter_filename.c_str()); 
    if (!pfile.is_open()) 
    {cout << "Unable to open parameter file:parameter_filename"<<endl;return 0;} 

    param_map = new map<string, string>(); 

    string line,key, value; 
    while (getline(pfile, line)) 
    { 
    istringstream tokens(line); 
    while(tokens >> ws && getline(tokens, key, '=') && 
     tokens >> ws && getline(tokens, value)){ 
     key.erase(remove(key.begin(),key.end(),' '),key.end()); 
     size_t i = value.find("//"); 
     if(i!=string::npos) { 
    value = value.substr(0,i-1); 
    value.erase(remove(value.begin(),value.end(),' '),value.end()); 
     } 
     (*param_map)[key] = value; 
    } 
    } 

    pfile.close(); 
    return 1; 
} 
//***************************************************************************** 
#endif 

Answer 1

あなたは、最初のエラーメッセージを読めば：

invalid use of incomplete type ‘std::ifstream’ 

あなたがタイプstd::ifstreamが定義されていないことがわかります。それはヘッダ<fstream>に定義されているので、それを含める必要があります。

このコードでは、std::istringstreamも使用されています。これには、<sstream>が必要です。

その他のエラーのほとんどはそれによって修正されるべきです。また

、それはエラーが発生することはありませんが、あなたは __PARAMETER_FILE_PARSER__のような予約名を使用しないでください。一般に、先頭または二重のアンダースコアは使用しないでください。

Answer 2

私はあなたがはifstreamにアクセスする前に、あなたのヘッダーでのfstreamを含める必要があります信じています。