Convert decimal to hexadecimal number
Decimal and hexadecimal are two number systems used to represent numeric values. The decimal system is a base-10 numbering system, which means it uses 10 digits (0-9) to represent numbers. The hexadecimal system is a base-16 numbering system, which means it uses 16 digits (0-9 and A-F) to represent numbers.
To convert a decimal number to a hexadecimal number, you need to follow these steps:
- Divide the decimal number by 16.
- Write down the quotient and remainder.
- Repeat steps 1 and 2 with the quotient until the quotient is 0.
- Write the remainders in reverse order to get the hexadecimal equivalent.
For example, let's convert the decimal number 305 to hexadecimal:
- Divide 305 by 16. The quotient is 19 with a remainder of 1.
- Write down the quotient (19) and remainder (1): [1 19] result is remainder 1.
- Divide 19 by 16. The quotient is 1 with a remainder of (3).[1,3] result is remainder 3.
- Divide 1 by 16. The quotient is 0 with a remainder of 1. [0,1] result is remainder 1.
- The hexadecimal equivalent is therefore 131.
So, the decimal number 305 is equivalent to the hexadecimal number 131.
Program Solution
//C Program
//Convert decimal to hexadecimal number
#include <stdio.h>
//Reverse the resultant of hexadecimal
void reverse(char str[], int start, int end)
{
char temp;
for (start; start < end; start++, end--)
{
temp = str[start];
str[start] = str[end];
str[end] = temp;
}
}
void hexadecimal(int number, char result[])
{
int flag = 0;
int digit = 0;
int index = 0;
while (number != 0)
{
digit = number % 16;
if (digit < 0)
{
digit = -digit;
}
if (digit < 10)
{
//48 ASCII of '0'
result[index] = digit + 48;
}
else if (digit > 10)
{
//55 ASCII of '7'
result[index] = digit + 55;
}
index++;
number /= 16;
}
if (index >= 1)
{
//add null char
result[index] = '\0';
reverse(result, 0, index - 1);
}
}
void decimal_to_hexa(int number)
{
char output[32];
int flag = 0;
printf("Decimal : %d ", number);
if (number < 0)
{
number = -number;
flag = 1;
}
//Convert decimal to hexa decimal
hexadecimal(number, output);
if (flag == 0)
{
printf(" Hexadecimal : %s \n", output);
}
else
{
//When number is negative number
printf(" Hexadecimal : -%s \n", output);
}
}
int main()
{
//Test Case
decimal_to_hexa(16);
decimal_to_hexa(-16);
decimal_to_hexa(143);
decimal_to_hexa(148);
decimal_to_hexa(128);
decimal_to_hexa(14);
decimal_to_hexa(-17);
return 0;
}
Output
Decimal : 16 Hexadecimal : 10
Decimal : -16 Hexadecimal : -10
Decimal : 143 Hexadecimal : 8F
Decimal : 148 Hexadecimal : 94
Decimal : 128 Hexadecimal : 80
Decimal : 14 Hexadecimal : E
Decimal : -17 Hexadecimal : -11/*
Java Program
Convert decimal to hexadecimal number
*/
public class MyNumber
{
//Convert decimal to hexadecimal
public String hexa_decimal(long number)
{
String result = "";
long digit = 0;
int index = 0;
while (number != 0)
{
digit = number % 16;
if (digit < 0)
{
digit = -digit;
}
if (digit < 10)
{
//48 ASCII of '0'
result = (char)(digit + 48) + result;
}
else if (digit > 10)
{
//55 ASCII of '7'
result = (char)(digit + 55) + result;
}
index++;
number /= 16;
}
return result;
}
public void decimal_to_hexa(long number)
{
System.out.print("Decimal : " + number);
boolean flag = false;
if (number < 0)
{
flag = true;
}
//Convert decimal to hexa decimal
String output = hexa_decimal(number);
if (flag == true)
{
//When negative element exist
output = "-" + output;
}
System.out.print(" Hexadecimal : " + output + " \n");
}
public static void main(String[] args)
{
MyNumber obj = new MyNumber();
//Test Cases
obj.decimal_to_hexa(16);
obj.decimal_to_hexa(-16);
obj.decimal_to_hexa(143);
obj.decimal_to_hexa(148);
obj.decimal_to_hexa(128);
obj.decimal_to_hexa(14);
obj.decimal_to_hexa(-17);
}
}
Output
Decimal : 16 Hexadecimal : 10
Decimal : -16 Hexadecimal : -10
Decimal : 143 Hexadecimal : 8F
Decimal : 148 Hexadecimal : 94
Decimal : 128 Hexadecimal : 80
Decimal : 14 Hexadecimal : E
Decimal : -17 Hexadecimal : -11/*
C++ Program
Convert decimal to hexadecimal number
*/
#include<iostream>
using namespace std;
class MyNumber
{
public:
//Convert decimal to hexadecimal
string hexa_decimal(long number)
{
string result = "";
long digit = 0;
int index = 0;
while (number != 0)
{
digit = number % 16;
if (digit < 0)
{
digit = -digit;
}
if (digit < 10)
{
//48 ASCII of '0'
result = (char)(digit + 48) + result;
}
else if (digit > 10)
{
//55 ASCII of '7'
result = (char)(digit + 55) + result;
}
index++;
number /= 16;
}
return result;
}
void decimal_to_hexa(long number)
{
cout << "Decimal : " << number;
bool flag = false;
if (number < 0)
{
flag = true;
}
//Convert decimal to hexa decimal
string output = this->hexa_decimal(number);
if (flag == true)
{
//When negative element exist
output = "-" + output;
}
cout << " Hexadecimal : " << output << " \n";
}
};
int main()
{
MyNumber obj = MyNumber();
//Test Cases
obj.decimal_to_hexa(16);
obj.decimal_to_hexa(-16);
obj.decimal_to_hexa(143);
obj.decimal_to_hexa(148);
obj.decimal_to_hexa(128);
obj.decimal_to_hexa(14);
obj.decimal_to_hexa(-17);
return 0;
}
Output
Decimal : 16 Hexadecimal : 10
Decimal : -16 Hexadecimal : -10
Decimal : 143 Hexadecimal : 8F
Decimal : 148 Hexadecimal : 94
Decimal : 128 Hexadecimal : 80
Decimal : 14 Hexadecimal : E
Decimal : -17 Hexadecimal : -11/*
C# Program
Convert decimal to hexadecimal number
*/
using System;
public class MyNumber
{
//Convert decimal to hexadecimal
public String hexa_decimal(long number)
{
String result = "";
long digit = 0;
int index = 0;
while (number != 0)
{
digit = number % 16;
if (digit < 0)
{
digit = -digit;
}
if (digit < 10)
{
//48 ASCII of '0'
result = (char)(digit + 48) + result;
}
else if (digit > 10)
{
//55 ASCII of '7'
result = (char)(digit + 55) + result;
}
index++;
number /= 16;
}
return result;
}
public void decimal_to_hexa(long number)
{
Console.Write("Decimal : " + number);
Boolean flag = false;
if (number < 0)
{
flag = true;
}
//Convert decimal to hexa decimal
String output = hexa_decimal(number);
if (flag == true)
{
//When negative element exist
output = "-" + output;
}
Console.Write(" Hexadecimal : " + output + " \n");
}
public static void Main(String[] args)
{
MyNumber obj = new MyNumber();
//Test Cases
obj.decimal_to_hexa(16);
obj.decimal_to_hexa(-16);
obj.decimal_to_hexa(143);
obj.decimal_to_hexa(148);
obj.decimal_to_hexa(128);
obj.decimal_to_hexa(14);
obj.decimal_to_hexa(-17);
}
}
Output
Decimal : 16 Hexadecimal : 10
Decimal : -16 Hexadecimal : -10
Decimal : 143 Hexadecimal : 8F
Decimal : 148 Hexadecimal : 94
Decimal : 128 Hexadecimal : 80
Decimal : 14 Hexadecimal : E
Decimal : -17 Hexadecimal : -11<?php
/*
Php Program
Convert decimal to hexadecimal number
*/
class MyNumber
{
//Convert decimal to hexadecimal
public function hexa_decimal($number)
{
$result = "";
$digit = 0;
$index = 0;
while ($number != 0)
{
$digit = $number % 16;
if ($digit < 0)
{
$digit = -$digit;
}
if ($digit < 10)
{
//48 ASCII of '0'
$result = chr(($digit + 48)) . $result;
}
else if ($digit > 10)
{
//55 ASCII of '7'
$result = chr(($digit + 55)) . $result;
}
$index++;
$number = intval($number / 16);
}
return $result;
}
public function decimal_to_hexa($number)
{
echo("Decimal : ". $number);
$flag = false;
if ($number < 0)
{
$flag = true;
}
//Convert decimal to hexa decimal
$output = $this->hexa_decimal($number);
if ($flag == true)
{
//When negative element exist
$output = "-". $output;
}
echo(" Hexadecimal : ". $output ." \n");
}
}
function main()
{
$obj = new MyNumber();
//Test Cases
$obj->decimal_to_hexa(16);
$obj->decimal_to_hexa(-16);
$obj->decimal_to_hexa(143);
$obj->decimal_to_hexa(148);
$obj->decimal_to_hexa(128);
$obj->decimal_to_hexa(14);
$obj->decimal_to_hexa(-17);
}
main();
Output
Decimal : 16 Hexadecimal : 10
Decimal : -16 Hexadecimal : -10
Decimal : 143 Hexadecimal : 8F
Decimal : 148 Hexadecimal : 94
Decimal : 128 Hexadecimal : 80
Decimal : 14 Hexadecimal : E
Decimal : -17 Hexadecimal : -11/*
Node Js Program
Convert decimal to hexadecimal number
*/
class MyNumber
{
//Convert decimal to hexadecimal
hexa_decimal(number)
{
var result = "";
var digit = 0;
var index = 0;
while (number != 0)
{
digit = number % 16;
if (digit < 0)
{
digit = -digit;
}
if (digit < 10)
{
//48 ASCII of '0'
result = String.fromCharCode((digit + 48)) + result;
}
else
if (digit > 10)
{
//55 ASCII of '7'
result = String.fromCharCode((digit + 55)) + result;
}
index++;
number = parseInt(number / 16);
}
return result;
}
decimal_to_hexa(number)
{
process.stdout.write("Decimal : " + number);
var flag = false;
if (number < 0)
{
flag = true;
}
//Convert decimal to hexa decimal
var output = this.hexa_decimal(number);
if (flag == true)
{
//When negative element exist
output = "-" + output;
}
process.stdout.write(" Hexadecimal : " + output + " \n");
}
}
function main(args)
{
var obj = new MyNumber();
//Test Cases
obj.decimal_to_hexa(16);
obj.decimal_to_hexa(-16);
obj.decimal_to_hexa(143);
obj.decimal_to_hexa(148);
obj.decimal_to_hexa(128);
obj.decimal_to_hexa(14);
obj.decimal_to_hexa(-17);
}
main();
Output
Decimal : 16 Hexadecimal : 10
Decimal : -16 Hexadecimal : -10
Decimal : 143 Hexadecimal : 8F
Decimal : 148 Hexadecimal : 94
Decimal : 128 Hexadecimal : 80
Decimal : 14 Hexadecimal : E
Decimal : -17 Hexadecimal : -11# Python 3 Program
# Convert decimal to hexadecimal number
class MyNumber :
# Convert decimal to hexadecimal
def hexa_decimal(self, number) :
result = ""
digit = 0
index = 0
while (number != 0) :
digit = number % 16
if (digit < 0) :
digit = -digit
if (digit < 10) :
# 48 ASCII of '0'
result = chr((digit + 48)) + result
elif (digit > 10) :
# 55 ASCII of '7'
result = chr((digit + 55)) + result
index += 1
number = int(number / 16)
return result
def decimal_to_hexa(self, number) :
print("Decimal : ", number, end = "")
flag = False
if (number < 0) :
flag = True
number = -number
# Convert decimal to hexa decimal
output = self.hexa_decimal(number)
if (flag == True) :
# When negative element exist
output = "-"+ output
print(" Hexadecimal : ", output ," \n", end = "")
def main() :
obj = MyNumber()
# Test Cases
obj.decimal_to_hexa(16)
obj.decimal_to_hexa(-16)
obj.decimal_to_hexa(143)
obj.decimal_to_hexa(148)
obj.decimal_to_hexa(128)
obj.decimal_to_hexa(14)
obj.decimal_to_hexa(-17)
if __name__ == "__main__": main()
Output
Decimal : 16 Hexadecimal : 10
Decimal : -16 Hexadecimal : -10
Decimal : 143 Hexadecimal : 8F
Decimal : 148 Hexadecimal : 94
Decimal : 128 Hexadecimal : 80
Decimal : 14 Hexadecimal : E
Decimal : -17 Hexadecimal : -11# Ruby Program
# Convert decimal to hexadecimal number
class MyNumber
# Convert decimal to hexadecimal
def hexa_decimal(number)
result = ""
digit = 0
index = 0
while (number != 0)
digit = number % 16
if (digit < 0)
digit = -digit
end
if (digit < 10)
# 48 ASCII of '0'
result = ((digit + 48)).chr + result
elsif (digit > 10)
# 55 ASCII of '7'
result = ((digit + 55)).chr + result
end
index += 1
number /= 16
end
return result
end
def decimal_to_hexa(number)
print("Decimal : ", number)
flag = false
if (number < 0)
flag = true
number = -number
end
# Convert decimal to hexa decimal
output = self.hexa_decimal(number)
if (flag == true)
# When negative element exist
output = "-"+ output
end
print(" Hexadecimal : ", output ," \n")
end
end
def main()
obj = MyNumber.new()
# Test Cases
obj.decimal_to_hexa(16)
obj.decimal_to_hexa(-16)
obj.decimal_to_hexa(143)
obj.decimal_to_hexa(148)
obj.decimal_to_hexa(128)
obj.decimal_to_hexa(14)
obj.decimal_to_hexa(-17)
end
main()
Output
Decimal : 16 Hexadecimal : 10
Decimal : -16 Hexadecimal : -10
Decimal : 143 Hexadecimal : 8F
Decimal : 148 Hexadecimal : 94
Decimal : 128 Hexadecimal : 80
Decimal : 14 Hexadecimal : E
Decimal : -17 Hexadecimal : -11
/*
Scala Program
Convert decimal to hexadecimal number
*/
class MyNumber
{
//Convert decimal to hexadecimal
def hexa_decimal(num: Long): String = {
var result: String = "";
var digit: Long = 0;
var index: Int = 0;
var number: Long = num;
while (number != 0)
{
digit = number % 16;
if (digit < 0)
{
digit = -digit;
}
if (digit < 10)
{
//48 ASCII of '0'
result = ""+(digit + 48).toChar + (result);
}
else if (digit > 10)
{
//55 ASCII of '7'
result = ""+(digit + 55).toChar + (result);
}
index += 1;
number = (number / 16).toInt;
}
return result;
}
def decimal_to_hexa(num: Long): Unit = {
var number: Long = num;
print("Decimal : " + number);
var flag: Boolean = false;
if (number < 0)
{
flag = true;
number = -number;
}
//Convert decimal to hexa decimal
var output: String = hexa_decimal(number);
if (flag == true)
{
//When negative element exist
output = "-" + output;
}
print(" Hexadecimal : " + output + " \n");
}
}
object Main
{
def main(args: Array[String]): Unit = {
var obj: MyNumber = new MyNumber();
//Test Cases
obj.decimal_to_hexa(16);
obj.decimal_to_hexa(-16);
obj.decimal_to_hexa(143);
obj.decimal_to_hexa(148);
obj.decimal_to_hexa(128);
obj.decimal_to_hexa(14);
obj.decimal_to_hexa(-17);
}
}
Output
Decimal : 16 Hexadecimal : 10
Decimal : -16 Hexadecimal : -10
Decimal : 143 Hexadecimal : 8F
Decimal : 148 Hexadecimal : 94
Decimal : 128 Hexadecimal : 80
Decimal : 14 Hexadecimal : E
Decimal : -17 Hexadecimal : -11/*
Swift Program
Convert decimal to hexadecimal number
*/
class MyNumber
{
//Convert decimal to hexadecimal
func hexa_decimal(_ number: inout Int) -> String
{
var result: String = "";
var digit: Int = 0;
var index: Int = 0;
while (number != 0)
{
digit = number % 16;
if (digit < 0)
{
digit = -digit;
}
if (digit < 10)
{
//48 ASCII of "0"
result = String(UnicodeScalar(UInt8((digit + 48)))) + result;
}
else
if (digit > 10)
{
//55 ASCII of "7"
result = String(UnicodeScalar(UInt8((digit + 55)))) + result;
}
index += 1;
number /= 16;
}
return result;
}
func decimal_to_hexa(_ num: Int)
{
var number : Int = num;
print("Decimal : ", number, terminator: "");
var flag: Bool = false;
if (number < 0)
{
flag = true;
number = -number;
}
//Convert decimal to hexa decimal
var output: String = self.hexa_decimal(&number);
if (flag == true)
{
//When negative element exist
output = "-" + output;
}
print(" Hexadecimal : ", output ," \n", terminator: "");
}
}
func main()
{
let obj: MyNumber = MyNumber();
//Test Cases
obj.decimal_to_hexa(16);
obj.decimal_to_hexa(-16);
obj.decimal_to_hexa(143);
obj.decimal_to_hexa(148);
obj.decimal_to_hexa(128);
obj.decimal_to_hexa(14);
obj.decimal_to_hexa(-17);
}
main();
Output
Decimal : 16 Hexadecimal : 10
Decimal : -16 Hexadecimal : -10
Decimal : 143 Hexadecimal : 8F
Decimal : 148 Hexadecimal : 94
Decimal : 128 Hexadecimal : 80
Decimal : 14 Hexadecimal : E
Decimal : -17 Hexadecimal : -11
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