How export data from Visual C++ to CSV?

[MDR]

Hi!

Can someone explain me the steps to follow to export the data originated in a dialog based visual c++ (version 6.0) program to a CSV file?

I've tried somthing like this:

void CSizeDistributionDlg::OnSave() 
{
    // TODO: Code für die Behandlungsroutine der Steuerelement-Benachrichtigung hier einfügen
    const char *filename = "C:\Documents and Settings\X\Desktop\trycsv.csv";
   FILE *Archi;
   Archi = fopen(filename,"w");
   if (Archi==0)
      fprintf(stderr, "Fallo abriendo... %s para escribir\n",filename);      
   fprintf(Archi,"Hola mundo\n");
   fprintf(Archi,"Hola,Mundo\n");//etc...
   fclose(Archi); 
}
 
void CSizeDistributionDlg::OnOpen() 
{
    // TODO: Code für die Behandlungsroutine der Steuerelement-Benachrichtigung hier einfügen
    char linea[100], cadena[100];
   const char *filename = "C:\Documents and Settings\X\Desktop\trycsv.csv";
   FILE *Archi;
   Archi = fopen(filename,"r");
   if (Archi==0)
      fprintf(stderr,"Fallo al abrir %s \n",filename);
 
   for(int j=0;;j++){//total lineas
      if (feof(Archi)) break;
      for (int i=0;i<100;i++) {//caracteres          
         linea[i]=fgetc(Archi);
         if (linea[i]=='\n') break;
         if (feof(Archi)) break;
      }
      linea[i] = '\n';   //fin d datos de las celdas   
      strcpy(cadena, linea); //ultima cadena
   }   
   fclose(Archi);    
}
 
 

but it gives me errors when running it (Debug assertion failed)

Should I include something else, like headers or classes...?? I'm quite new in programming and I have not a global vision of this....

The reason I need to export to CSV is to open then with excel...

Thank you in advance!!

[weaknessforcats]

Yes, there are requirements for a .csv file in terms of headers and formatting.

You should search MSDN for this.

Just having a .csv in the file name is not enough.