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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5.     double num1, num2;
  6.     char op;
  7.     char choice;
  8.  
  9.     do {
  10.         cout << "Enter first number: ";
  11.         cin >> num1;
  12.  
  13.         cout << "Enter an operator (+, -, *, /): ";
  14.         cin >> op;
  15.  
  16.         cout << "Enter second number: ";
  17.         cin >> num2;
  18.  
  19.         switch (op) {
  20.             case '+':
  21.                 cout << "Result: " << num1 + num2 << endl;
  22.                 break;
  23.             case '-':
  24.                 cout << "Result: " << num1 - num2 << endl;
  25.                 break;
  26.             case '*':
  27.                 cout << "Result: " << num1 * num2 << endl;
  28.                 break;
  29.             case '/':
  30.                 if (num2 != 0)
  31.                     cout << "Result: " << num1 / num2 << endl;
  32.                 else
  33.                     cout << "Error: Division by zero!" << endl;
  34.                 break;
  35.             default:
  36.                 cout << "Error: Invalid operator!" << endl;
  37.         }
  38.  
  39.         cout << "Do you want to perform another calculation? (y/n): ";
  40.         cin >> choice;
  41.         cout << endl;
  42.  
  43.     } while (choice == 'y' || choice == 'Y');
  44.  
  45.     cout << "Calculator closed. Goodbye!" << endl;
  46.     return 0;
  47. }
  48.  
Success #stdin #stdout 0.01s 5284KB
comments (?)
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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Enter first number: Enter an operator (+, -, *, /): Enter second number: Error: Invalid operator!
Do you want to perform another calculation? (y/n): 
Calculator closed. Goodbye!
https://ideone.com/4MDAEX
language:
C++ (gcc 8.3)
created:
8 days ago
visibility:
public

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