HexViewer

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

void showHex (char* file); //shows a file in hex code

int main (int argc, char* argv [])
{
    char filename [256];

    if (argc>1)
    {
        strcpy (filename, argv [1]);

    }
    else
    {
        printf ("Dateiname: ");
        fgets (filename, 255, stdin); //entspricht gets
    }

    showHex (filename);

    return 0;
}

void showHex (char *file)
{
    FILE *datei;
    char text;

    datei = fopen (file, "r");

     if (datei != NULL)
    {
      while((text=getc(datei)) != EOF)
      {
        printf("%x", text);
      }


      fclose (datei);
    }


     else
     {
         fclose (datei);
         printf ("Datei nicht gefunden!");

     }

}