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  1. #include <stdio.h>
  2. #include <math.h>
  3. #include <stdlib.h>
  4.  
  5. void showMenu() {
  6.     printf("\n--- Calculator Menu ---\n");
  7.     printf("1. Add (+)\n");
  8.     printf("2. Subtract (-)\n");
  9.     printf("3. Multiply (*)\n");
  10.     printf("4. Divide (/)\n");
  11.     printf("5. Modulus (%%)\n");
  12.     printf("6. Power (^)\n");
  13.     printf("0. Exit\n");
  14.     printf("-----------------------\n");
  15.     printf("Choose an option: ");
  16. }
  17.  
  18. int main() {
  19.     int choice;
  20.     double num1, num2, result;
  21.  
  22.     do {
  23.         showMenu();
  24.         scanf("%d", &choice);
  25.  
  26.         if (choice == 0) {
  27.             printf("Exiting calculator. Goodbye!\n");
  28.             break;
  29.         }
  30.  
  31.         printf("Enter first number: ");
  32.         scanf("%lf", &num1);
  33.         printf("Enter second number: ");
  34.         scanf("%lf", &num2);
  35.  
  36.         switch (choice) {
  37.             case 1:
  38.                 result = num1 + num2;
  39.                 printf("Result: %.2lf\n", result);
  40.                 break;
  41.             case 2:
  42.                 result = num1 - num2;
  43.                 printf("Result: %.2lf\n", result);
  44.                 break;
  45.             case 3:
  46.                 result = num1 * num2;
  47.                 printf("Result: %.2lf\n", result);
  48.                 break;
  49.             case 4:
  50.                 if (num2 != 0) {
  51.                     result = num1 / num2;
  52.                     printf("Result: %.2lf\n", result);
  53.                 } else {
  54.                     printf("Error: Division by zero.\n");
  55.                 }
  56.                 break;
  57.             case 5:
  58.                 if ((int)num2 != 0) {
  59.                     result = (int)num1 % (int)num2;
  60.                     printf("Result: %.0lf\n", result);
  61.                 } else {
  62.                     printf("Error: Division by zero.\n");
  63.                 }
  64.                 break;
  65.             case 6:
  66.                 result = pow(num1, num2);
  67.                 printf("Result: %.2lf\n", result);
  68.                 break;
  69.             default:
  70.                 printf("Invalid option. Try again.\n");
  71.         }
  72.  
  73.     } while (1);
  74.  
  75.     return 0;
  76. }
  77.  
Success #stdin #stdout 0.01s 5292KB
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stdin
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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);
}
stdout
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--- Calculator Menu ---
1. Add (+)
2. Subtract (-)
3. Multiply (*)
4. Divide (/)
5. Modulus (%)
6. Power (^)
0. Exit
-----------------------
Choose an option: Exiting calculator. Goodbye!
https://ideone.com/PGm1yW
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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