#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <string.h>

#define NL printf ("\n")

int code (char filename [], char newfilename[], int n);
void input (char filename [], char newfilename[], int n);
//int decode (char newfilename [], int n);

int main (void)
{
    int n=0;
    char filename [80];
    char newfilename [80];

    input (filename, newfilename,n);

    code (filename, newfilename, n);

    //decode (newfilename, n);




    return 0;
}
void input (char filename [], char newfilename[], int n)
{
    printf ("Code your file!");
    NL;
    NL;

    printf ("Dateiname: ");
    gets (filename);
    NL;

    printf ("Neuer Name: ");
    gets (newfilename);

    NL;

    printf ("Durch was soll es erstezt werden?");
    scanf ("%d",&n);

}

int code (char filename [], char newfilename[], int n)
{
    FILE *fp;
    FILE *fpnew;
    char gff[200];
    int i=0;
    int len=0;

    if ((fp=fopen (("%s",filename),"r")) == NULL)
    {

        return -1;
    }

    if ((fpnew=fopen (("%s",newfilename),"w")) == NULL)
    {
        return -1;
    }


        len = strlen (gff);
        fgets (gff,199,fp);

        /*do
        {

        gff[i]=gff[i]+n;
        i++;
        } while (gff[i] < len);*/

        for(i=0; i<=strlen(gff); i++) {
                gff[i]+=n;
            }

        fputs (gff,fpnew);





    fclose (fp);
    fclose (fpnew);


}
/*
int decode (char newfilename[], int n)
{
    FILE *fp2;
    FILE *fpnew2;
    char gff [200];


    if ((fp2=fopen (("%s",newfilename),"r")) == NULL)
    {

        return -1;
    }

    if ((fpnew2=fopen ("decode.txt","w")) == NULL)
    {
        return -1;
    }

    do
    {
        fgets (gff,199,fp);
        if (gff == EOF)
        {
            break;
        }

        gff= gff -n,

        fputc (gff,fpnew2);


    }while (gff != NULL);



    fclose (fp2);
    fclose (fpnew2);


}
*/
/*
void GetThisSchueler(Schueler *_this, int ID, string datName) {

    FILE* dat = fopen(datName, "rb");

    if(dat != NULL) {

        fseek(dat, sizeof(Schueler)*ID, SEEK_SET); // Bits per sizeof(Schueler) errechnen... dann mal ID (soviele Datensätze müssen dann übersprungen werden (daher auch verminderung der ID im main)), SEEK_SET besagt dass man vom Anfang der Datei die Position verschiebt.

        fread(_this, sizeof(Schueler), 1, dat); // FILE-POINTER zeigt auf den Anfang des Datensatzes des gewünschten Schuelers, daher ab da einen Datensatz einlesen (Addresse etc.)

        fclose(dat);
    }

}*/