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Code: Alles auswählen

struct XYpair{
  double x;
  double y;
  XYpair(double x, double y):x(x),y(y){}
};

class INPUT{

 private:
  int psize;
  double xmin,xmax;
  int wahl;
  std::vector<XYpair> dptr;
public:
  void setvalue();
  std::vector<XYpair> Dataplot(int psize);
  int menu();
};
class Saveload{
private:
  ifstream idatei;
  ofstream odatei;
  std::vector<XYpair> Vp;
  char pfad [200];
public:
  void save(int n, std::vector<XYpair>);
  std::vector<XYpair> load();
};
#endif

Code: Alles auswählen

std::vector<XYpair> INPUT::Dataplot(int psize){
  
  double xr=(double)(xmax-xmin)/psize;
  double X=xmin;
  int i;
  std::vector<XYpair> dptr;
  X=xmin;
  for(i=0; i<psize; i++){
    dptr.push_back(XYpair(X,sin(X)));
    X+=xr;
  }
  return dptr;
}

void Saveload::save(int n, std::vector<XYpair> v){
  
  std::vector<XYpair> Vp;
  int i;
  for(i=0;i<=n-1;i++){
    Vp[i]=v[i];
  }
  
  cout<< "Unter welchem Pfadname soll es gepeichert werden?"<< endl;
  cin>>pfad;
  idatei.open(pfad, ios::in | ios::binary);
  
  if(!idatei){cout <<"Fehler beim Öffnen neuer Datei"<<endl;}
  
  idatei.read(Vp, sizeof(Vp)/sizeof(Vp[0])); 
  
  idatei.close()
    }

std::vector<XYpair> Saveload:: load(){
  int n;
  cout<<"von welchem Pfad soll ausgelesen werden"<< endl;
  cin>>pfad;
  
  odatei.open(pfad, ios::out | ios::binary);

  if(!odatei){cout <<"Fehler beim Öffnen der Datei"<<endl;}
  std::vector<XYpair> ptr;
  odatei.write(Vp,size(n));
  for(i=0; i<n; i++)
    ptr[i]=Vp[i];
  odatei.close();
 return ptr;
}

Code: Alles auswählen

int main(){
  int Wahl;
  int psize=15;
  std::vector<XYpair> V;
  
NPUT fdata;
  Saveload pdata;
  Wahl=fdata.menu();
 if(Wahl==1){
  fdata.setvalue();
  V=fdata.Dataplot(psize);
  pdata.save(psiz,V);
   }
 else if(Wahl==2){
    
   V =pdata.load();
   for(int i=0; i<psize-1; i++){
      cout <<"V.x"<<V[i].x<<"V.y"<<V[i].y<<'\n';
    }

Code: Alles auswählen

g++ -c project.cpp
project.cpp: In member function ‘void Saveload::save(int, std::vector<XYpair>)’:
project.cpp:50:42: error: no matching function for call to ‘std::basic_ifstream<char>::read(std::vector<XYpair>&, unsigned int)’
project.cpp:50:42: note: candidate is:
/usr/include/c++/4.6/istream:467:7: note: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::read(std::basic_istream<_CharT, _Traits>::char_type*, std::streamsize) [with _CharT = char, _Traits = std::char_traits<char>, std::basic_istream<_CharT, _Traits>::char_type = char, std::streamsize = int]
/usr/include/c++/4.6/istream:467:7: note:   no known conversion for argument 1 from ‘std::vector<XYpair>’ to ‘std::basic_istream<char>::char_type* {aka char*}’
project.cpp:53:2: error: expected ‘;’ before ‘}’ token
project.cpp: In member function ‘std::vector<XYpair> Saveload::load()’:
project.cpp:64:25: error: ‘size’ was not declared in this scope
project.cpp:65:7: error: ‘i’ was not declared in this scope
make: *** [project

Code: Alles auswählen

error: no matching function for call to ‘std::basic_ifstream<char>::read(std::vector<XYpair>&, unsigned int)’
project.cpp:50:42: note: candidate is:
/usr/include/c++/4.6/istream:467:7: note: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::read(std::basic_istream<_CharT, _Traits>::char_type*, std::streamsize) [with _CharT = char, _Traits = std::char_traits<char>, std::basic_istream<_CharT, _Traits>::char_type = char, std::streamsize = int]
/usr/include/c++/4.6/istream:467:7: note:   no known conversion for argument 1 from ‘std::vector<XYpair>’ to ‘std::basic_istream<char>::char_type* {aka char*}’