Program to convert Decimal to Hexadecimal

Problem statement:-  Program to convert Decimal to Hexadecimal.

 Data requirement:-

   Input Data:- dec

  Output Data:- Hex

  Additional Data:-i, j, rem

Program in C

Here is the source code of the C program to convert decimal number to hexadecimal number.

Code:

#include <stdio.h>
#include <math.h>
int
main ()
{
  int dec,rem,i=0;
  printf ("Enter Decimal number: ");
  scanf ("%d", &dec);
  char Hex[100];
  while(dec!=0)
  {
      rem=dec%16;
      //Convert Integer to char
      if(rem<10)
        Hex[i++]=rem+48;// 48 Ascii=0
      else
        Hex[i++]=rem+55;//55 Ascii=7
   dec/=16;
  }

  printf ("Hexadecimal number is:");
  int j;
  for(j=i-1;j>=0;j--)
    printf("%c",Hex[j]);
  return 0;
}

Input/Output:

Enter Decimal number: 30
Hexadecimal number is:1E

Program in C++

Here is the source code of the C++ program to convert decimal to hexadecimal using a while loop.

Code:

//Decimal to Hexadecimal
#include <iostream>
using namespace std;
int
main ()
{
  int dec,rem,i=0;
 cout<<"Enter Decimal number: ";
 cin>>dec;
  char Hex[100];
  while(dec!=0)
  {
      rem=dec%16;
      //Convert Integer to char
      if(rem<10)
        Hex[i++]=rem+48;// 48 Ascii=0
      else
        Hex[i++]=rem+55;//55 Ascii=7
   dec/=16;
  }

  cout<<"Hexadecimal number is:";
  int j;
  for(j=i-1;j>=0;j--)
    cout<<Hex[j];
  return 0;
}

Input/Output:

Enter Decimal number: 1010
Hexadecimal number is:3F2

Program in Java

  

Here is the source code of the Java program to convert a decimal number to a hexadecimal number.

Code:

import java.util.Scanner;
public class DecimalToHexadecimal {

public static void main(String[] args) {
Scanner cs=new Scanner(System.in);
int dec,rem,i=0;
 System.out.println("Enter Decimal number:");
  dec=cs.nextInt();
  char Hex[]=new char[100] ;
  while(dec!=0)
  {
      rem=dec%16;
      //Convert Integer to char
      if(rem<10)
        Hex[i++]=(char)(rem+48);// 48 Ascii=0
      else
        Hex[i++]=(char)(rem+55);//55 Ascii=7
   dec/=16;
  }

  System.out.print("Hexadecimal number is:");
  int j;
  for(j=i-1;j>=0;j--)
  System.out.print(Hex[j]);
  cs.close();
}
}

Input/Output:

Enter Decimal number:
2014
Hexadecimal number is:7DE

Program in Python
  

Here is the source code of the Python Program program to convert decimal to hexadecimal without function.

Code:

i=0
dec=int(input("Enter Decimal number: "))
Hex=['0']*50
while dec!=0:
    rem=dec%16;
    #Convert Integer to char
    if rem<10:
        Hex[i]=chr(rem+48)#48 Ascii=0
        i+=1
    else:
        Hex[i]=chr(rem+55) #55 Ascii=7
        i+=1
    dec//=16

print("Hexadecimal number is:")
for j in range(i-1,-1,-1):
    print(Hex[j],end="")

Input/Output:

Enter Decimal number: 1212
Hexadecimal number is:
4BC

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