Description

The Hexadecimal number system comprises of 16 entities. These 16 entities consist
of 10 digits, 0-9 representing the first 10 numbers of the hexadecimal system and
for the remaining 6 numbers, we use English alphabets ranging from A through F to
represent the numbers 10 to 15.

C/C++

/* C Program to convert Binary to HexaDecimal */
//Save it as BinaryToHexaDecimal.c


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

int main(){

     long int bin, hex=0, x=1, y, temp;

     printf("Enter binary number: ");
     scanf("%ld",&bin);

    //Storing the binary to temporary variable
     temp = bin;

     while(bin != 0)
     {
         y = bin % 10;
         hex = hex + y*x;
         x = x*2;
         bin = bin/10;
     }

    //Restoring the binary variable
     bin = temp;

     printf("Hexadecimal of %ld = %IX", bin, hex);

     return 0;
}

Input:
Enter a binary number : 11010

Output:
Binary of 11010 is 1A

Java

/* Java Program to convert Binary to HexaDecimal */
//Save it as BinaryToHexaDecimal.java

import java.io.*;
import java.util.Scanner;

public class BinaryToHexaDecimal {

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
        
        System.out.println("Enter a binary number : ");
        int bin = scanner.nextInt();
        
        String binToHexDec = binaryToHexDecimal(bin);
        
        System.out.println("Binary of " + bin + " is "+ binToHexDec);
    }

    private static String binaryToHexDecimal(int bin) {
        
        int decimalNumber = binaryToDecimal(bin);
        
        //Using the toHexString() built-in java method
        String hexNumber = Integer.toHexString(decimalNumber);
        
        hexNumber = hexNumber.toUpperCase();
  
        return hexNumber;
    }

    private static int binaryToDecimal(int bin) {
        
        int rem, dec = 0;
        int count=0;
        
        while(bin > 0) {
            
            rem = bin % 10;
            
            dec += (rem * Math.pow(2,count));
            
            bin/=10;
            
            count++;
        }
        
        return dec;
    }
}

Input:
Enter a binary number : 
11010

Output:
Binary of 11010 is 1A

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