#include <stdio.h>
 
int main() {
    int choice;
 
    printf("Pilih angka (1-3):\n");
    printf("1. Halo, Dunia!\n");
    printf("2. Selamat Belajar Hex Editing!\n");
    printf("3. Terima Kasih!\n");
    printf("Masukkan pilihan Anda (1-3): ");
    scanf("%d", &choice);
 
    if (choice == 1) {
        printf("Halo, Dunia!\n");
    } else if (choice == 2) {
        printf("Selamat Belajar Hex Editing!\n");
    } else if (choice == 3) {
        printf("Terima Kasih!\n");
    } else {
        printf("Pilihan tidak valid!\n");
    }
 
    return 0;
}
 

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

/*  Berechnung des Hamming-Abstandes zwischen zwei 128-Bit Werten in 	*/
/*	einer Textdatei. 													*/
/*  Die Werte müssen auf einer separaten Zeile gespeichert sein			*/
/* 																		*/
/*	Erstellt: 17.5.2010													*/
/*  Autor: Thomas Scheffler												*/

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

#define ARRAY_SIZE 32

unsigned Hamdist(unsigned x, unsigned y)
{
  unsigned dist = 0, val = x ^ y;
 
  // Count the number of set bits
  while(val)
  {
    ++dist; 
    val &= val - 1;
  }
 
  return dist;
}



int main (void)
{
	char hex;
	int i;
	int a[ARRAY_SIZE];
	int b[ARRAY_SIZE];
	int hamDist = 0;
	FILE* fp;
	
	//Arrays mit 0 initialisieren
	for (i = 0; i < ARRAY_SIZE; ++i)
	{
  		a[i] = 0;
  		b[i] = 0;
	}

	
	fp = fopen("hex.txt","r");
	if (fp == NULL) 
	{
		printf("Die Datei hex.txt wurde nicht gefunden!");
		exit(EXIT_FAILURE);
	}

	i=0;
	printf("1.Zeile einlesen.\n");

 	while((hex=fgetc(fp))!='\n' && hex != EOF)
    {
        a[i]=strtol(&hex,0,16);
		i++;
    }
	i=0;
	printf("2.Zeile einlesen.\n");

 	while((hex=fgetc(fp))!='\n' && hex != EOF)
    {
    	b[i]=strtol(&hex,0,16);
        i++;
    }
	fclose(fp);

	printf("Hamming-Abweichung pro Nibble:\n");
	for (i = 0; i < ARRAY_SIZE; ++i)
	{
		printf ("%i\t%i\t%i\n",a[i],b[i],Hamdist(a[i],b[i]));
		hamDist += Hamdist(a[i],b[i]);
	}
	printf ("\nHamming-Abweichung der Hash-Werte:%d\n",hamDist);
}