[C++] Vector-Struct Problem

[Niji-chan]

Code (c++):

#include <iostream>
// fuer Datenhandling
#include <fstream>
// fuer Textfarbe usw.
#include <conio2.h>
// fuer Vectoren
#include <vector>
// Namensraum std verwenden
using namespace std;
/**
 * Klasse zum Verarbeiten von Gewicht
**/
class CWeight {
    private:
        struct sWeightEntry {
            char chDate[10];
            float fWeight;
            sWeightEntry(const char *date, float weight) : // Konstruktor
                fWeight(weight) // setzen von lokalem fWeight auf weight
            {
                memcpy(chDate, date, sizeof(chDate)); // kopieren der Array
                chDate[9] += '\0'; // sicherheitshalber
            }
        };
    public:
        // oeffentliche Variablen
        vector<sWeightEntry> vWeightList;
 
        // oeffentliche Funktionen definieren
 
        /**
         * Gewicht in Klassen-Vektor schreiben
         *
         * @param char chDate Datum bestehend aus 10 Zeichen
         * @param float fWeight Gewicht
         * @return void
        **/
        void AddWeight(const char *chDate, float fWeight) {
            cout << chDate << " : " << fWeight << "\n";
            vWeightList.push_back(sWeightEntry(chDate, fWeight));
        }
};
 
// nav class
// hier weggelassen, da es im Grunde nur Ausgabe des Menüs ist
 
class CDragonfly {
    private:
        // private vars
 
        CWeight mWeight;
 
        // vars to stop while-loops
        bool bEnd;
        bool bEndWeight;
 
        int iInput;
        char chInput;
 
        // private functions
 
        /**
         * get an int from user and return it
         * @return int integer which is entered by user
        **/
        int getIInput() {
            textcolor(LIGHTGREEN);
            int iInput;
            cin >> iInput;
            textcolor(LIGHTGRAY);
            return iInput;
        }
        /**
         * get a float from user and return it
         * @return float float which is entered by user
        **/
        float getFInput() {
            textcolor(LIGHTGREEN);
            float fInput;
            cin >> fInput;
            textcolor(LIGHTGRAY);
            return fInput;
        }
        /**
         * get a char from user and return it
         * @return char char which is entered by user
        **/
        char getChInput() {
            textcolor(LIGHTGREEN);
            char chInput;
            cin >> chInput;
            textcolor(LIGHTGRAY);
            return chInput;
        }
 
        int save() {
            ofstream output("scale.df", ios::binary);
            if(output == NULL) {
                return -1;
            }
            output.write((char *) &mWeight, sizeof(mWeight));
            output.close();
            return 0;
        }
    public:
        CDragonfly() {
            // open file to read
            ifstream fileInput("scale.df", ios::binary);
            if(fileInput == NULL) {
                //return -2;
            }
            fileInput.read((char *) &mWeight, sizeof(mWeight));
 
            bEnd = false;
            while(bEnd != true) {
                CNav::MainNav();
                iInput = getIInput();
 
                switch(iInput) {
                    case 1:
                        bEndWeight = false;
                        while(bEndWeight != true) {
                            CNav::Weight();
                            chInput = getChInput();
 
                            switch(chInput) {
                                case 'q': // go out of this menu
                                     bEndWeight = true;
                                     break;
                                case 'o': // show the overview
                                     if(fileInput == NULL) {
                                         //return -2;
                                     }
                                     fileInput.read((char *) &mWeight, sizeof(mWeight));
                                     for(unsigned int i = 0; i < mWeight.vWeightList.size(); i++) {
                                         cout << mWeight.vWeightList[i].chDate << "\t:\t" << mWeight.vWeightList[i].fWeight << "\n";
                                     };
                                     iInput = getIInput();
                                     break;
                                case 'n': // new weight-date input
                                     cout << "\nDatum:\n\n";
                                     textcolor(LIGHTGREEN);
                                     char chDate[10];
                                     cin >> chDate;
                                     textcolor(LIGHTGRAY);
 
                                     cout << "\nGewicht:\n\n";
                                     float fWeight;
                                     fWeight = getFInput();
 
                                     mWeight.AddWeight(chDate, fWeight);
                                     save();
                                     break;
                            }
                        }
                        break;
                    case 98: // show the main information
                        CNav::Info();
                        chInput = getChInput();
                        break;
                    case 99:
                        save();
                        fileInput.close();
                        clrscr();
                        bEnd = true;
                        break;
                }
            }
        }
};
 
// Hauptfunktion
int main();
 
int main() {
    CDragonfly mDragonfly;
 
    return 0;
}
 

Problem tritt also an sich bei CDragonfly() am Anfang beim Auslesen der Datei auf.

Edit: ach ja - und schönen Urlaub