# Program to convert Octal To Hexadecimal

Problem statement:-  Program to convert Octal 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 the octal number to a hexadecimal number.

Code:

#include <stdio.h>
#include <math.h>
int main ()
{
int octal,rem,i=0;
printf ("Enter Octal number: ");
scanf ("%d", &octal);
char Hex[100];
int decimal = 0, sem = 0;

//Octal to decimal covert
while(octal!=0)
{
decimal=decimal+(octal%10)*pow(8,sem);
sem++;
octal=octal/ 10;
}
while(decimal!=0)
{
rem=decimal%16;
//Convert Integer to char
if(rem<10)
Hex[i++]=rem+48;// 48 Ascii=0
else
Hex[i++]=rem+55;//55 Ascii=7
decimal/=16;
}

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

Input/Output:
Enter Octal number: 1234

Program in C++

Here is the source code of the C++ program to convert the octal number to a hexadecimal number.

Code:

#include<iostream>
#include<cmath>
using namespace std;
int main ()
{
int octal,rem,i=0;
cout<<"Enter Octal number: ";
cin>>octal;
char Hex[100];
int decimal = 0, sem = 0;

//Octal to decimal covert
while(octal!=0)
{
decimal=decimal+(octal%10)*pow(8,sem);
sem++;
octal=octal/ 10;
}
while(decimal!=0)
{
rem=decimal%16;
//Convert Integer to char
if(rem<10)
Hex[i++]=rem+48;// 48 Ascii=0
else
Hex[i++]=rem+55;//55 Ascii=7
decimal/=16;
}

int j;
for(j=i-1;j>=0;j--)
cout<<Hex[j];
return 0;
}

Input/Output:
Enter Octal number: 2040

Program in Java

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

Code:

import java.util.Scanner;

public static void main(String[] args) {
Scanner cs=new Scanner(System.in);
int octal,rem,i=0;
System.out.println("Enter Octal number:");
octal=cs.nextInt();
int decimal = 0, sem = 0;
char Hex[]=new char[100] ;

//Octal to decimal covert
while(octal!=0)
{
decimal=(int) (decimal+(octal%10)*Math.pow(8,sem));
sem++;
octal=octal/ 10;
}

while(decimal!=0)
{
rem=decimal%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
decimal/=16;
}

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

Input/Output:
Enter Octal number:
7463

Program in Python

Here is the source code of the Python Program program to an octal number to a hexadecimal number without function.

Code:

i=0
octal=int(input("Enter Octal number:"))
Hex=['0']*50
decimal = 0
sem = 0
#Octal to decimal covert
while octal!=0:
decimal=decimal+(octal%10)*pow(8,sem);
sem+=1
octal=octal// 10
while decimal!=0:
rem=decimal%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
decimal//=16

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

Input/Output:
Enter Octal number:14