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C-/C++-Quelltext

#include <iostream>
using namespace std;
#include <fstream>
#include <cstring>
#include <iomanip>
#include <direct.h>
#include "fs_class.h"


#define Pfad "C:\\cpp\\fs_write_read_binary.txt"
typedef gamer rofl;

int main(){

    rofl Platzhalter;
    //Platzhalter.set(1, 20, 30, "roflGUY");

    rofl temp;


    //ofstream HausEine;

    //HausEine.open(Pfad, ios::out | ios::binary | ios_base::trunc );

    //if(!HausEine){

    //  cerr << "Error opening file::line: " << __LINE__ << endl;

    //}

    //HausEine.write((const char*)&Platzhalter, sizeof(rofl));

    //HausEine.close();


    fstream AussaDamit;
    AussaDamit.open(Pfad, ios::in | ios::out | ios::binary);
    AussaDamit.read((char*)&tempGamer, sizeof(rofl));
    int input;
    do{
        tempGamer.get();
        cout << "set a new level: ";
        cin >> input;
        if((input >0) && (input <=170)){
            AussaDamit.read((char*)&tempGamer, sizeof(rofl));
            temp.level = input;
            AussaDamit.write((const char*)&tempGamer, sizeof(rofl));
            cout << "manipulating level succeeded!" << endl;
        } else {
            cout << "manipulating level failed! Input is not conform." << endl;
        }

    } while( input != 0);



    AussaDamit.close();

    return(0);
}

C-/C++-Quelltext

#define MAXNAMELENGTH 100

class gamer{
public:
    int id;
    int level;
    short percent_by_level;
    char name[MAXNAMELENGTH];
public:
    void set(int id, int level, short percent_by_level, char *name);
    void get();
    void setLevel(int lvl);

}tempGamer;
//////////////////////////////////////////////////////////////////////////


//Setzen der Attribute für gamer-class

void gamer::set(int id, int level, short percent_by_level, char *name){
    this->id = id;
    this->level = level;
    this->percent_by_level = percent_by_level;
    strcpy_s(this->name, sizeof(this->name), name);
}

//Attribute über 'cout' auf Konsole ausgeben

void gamer::get(){
    cout << "id: "      << id << " "
        << "lvl: "      << level << " "
        << "percent: "  << percent_by_level << " "
        << "name: "     << name << endl;
}

//Neues Level Setzen

void gamer::setLevel(int lvl){
    this->level = lvl;
}