## Convert Octal to Hexadecimal in C++

In this post, firstly we will understand how to convert an Octal number to Hexadecimal number, then we will implement the same using C++ programming language. Let’s first understand how the conversion works: How to Convert Octal to Hexadecimal? When converting from octal to hexadecimal, it is often easier to first convert the octal number … Read more

## Program to convert Decimal to Octal in C++

Here we will write a program to convert Decimal to Octal in C++ programming language. First lets start with how to convert any decimal number to an octal number: Example: Here is an example of using repeated division to convert 1792 from decimal number to an octal number: Decimal Number   Operation   Quotient   Remainder   Octal Result … Read more

## C++ program to convert decimal to binary

Hello all, today we are going to write a C++ program to convert decimal to binary number, let’s first discuss how we can convert a decimal number to binary number and later we will write the program for the same. How Program works? Lets take an example of 11. Now divide it by 2 and … Read more

## Program to Convert Hexadecimal to Binary C++

How to convert Hexadecimal to Binary C++: To convert or change the hexadecimal number to binary number replace the each octal digits by a binary number using hexadecimal to binary chart. For example: We want to convert hexadecimal number 65B2 to binary. For this we will replace each hexadecimal digit to binary values using the … Read more

## Program to convert Octal to Decimal C++

### How Program Works:

To convert an octal number to decimal number:

• multiply each digits separately of octal number from right side by  8^0,8^1,8^2,8^3 … respectively and then find out the sum of them.

For Example we want to convert octal number 3401 to decimal number.

i)  1 * 8 ^0 = 1*1 =1

ii)  0 * 8 ^1 = 0*8 =0

iii)  4 * 8 ^2 = 4*64 =256

iv)  3 * 8 ^3 = 3*512 =1536

v)  Sum= 1 + 0 + 256 + 1536 = 1793

• So, (3401)8 = (1793)10

### Program to convert Octal to Decimal C++:

```#include<iostream>
#include<math.h>

using namespace std;

int main()
{
long int octal,decimal =0;
int i=0;

cout<<"Enter any octal number: ";
cin>>octal;
cout<<endl;
while(octal!=0)
{
decimal = decimal + (octal % 10) * pow(8,i++);
octal = octal/10;
}

cout<<"Equivalent decimal value: "<<decimal<<endl;

return 0;
}```

## Program to convert Octal to Binary C++

### Programming Logic:

To convert or change the octal number to binary number replace the each octal digits by a binary number using octal to binary chart.

For example take 25: Binary of 2 is 010 and Binary of 5 is 101.

Therefore binary of octal 25 is: 010101

### Program to convert Octal to Binary C++:

```#include<iostream>
using namespace std;

#define MAX 1000

int main()
{

char octalNumber[MAX];
long int i=0;

cout<<"Enter any octal number: ";
cin>>octalNumber;

cout<<"Equivalent binary value: ";
while(octalNumber[i])
{
switch(octalNumber[i])
{
case '0': cout<<"000";
break;
case '1': cout<<"001";
break;
case '2': cout<<"010";
break;
case '3': cout<<"011";
break;
case '4': cout<<"100";
break;
case '5': cout<<"101";
break;
case '6': cout<<"110";
break;
case '7': cout<<"111";
break;
default:  cout<<"nInvalid octal digit "<<octalNumber[i];
return 0;
}
i++;
}

return 0;
}```