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C++ Program to Convert Octal Number to Decimal

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robaa
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2022-11-26
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Write a C++ Program to Convert Octal Number to Decimal. Here’s simple C++ Program to Convert Octal Number to Decimal in C++ Programming Language.

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robaa
2022-11-26
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Normally, when we work with Numbers, we use primitive data types such as int, short, long, float and double, etc. The number data types, their possible values and number ranges have been explained while discussing C++ Data Types.

 
 

Here is source code of the C++ Program to Convert Octal Number to Decimal. The C++ program is successfully compiled and run(on Codeblocks) on a Windows system. The program output is also shown in below.

SOURCE CODE : :

/* C++ Program to Convert Octal Number to Decimal  */

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

int octalToDecimal(int octalNumber);

int main()
{
   int octalNumber;
   cout << "Enter an octal number: ";
   cin >> octalNumber;
   cout <<"\n [ "<< octalNumber << " ] in octal = [ " << octalToDecimal(octalNumber) << " ] in decimal\n";

   return 0;
}

// Function to convert octal number to decimal
int octalToDecimal(int octalNumber)
{
    int decimalNumber = 0, i = 0, rem;
    while (octalNumber != 0)
    {
        rem = octalNumber % 10;
        octalNumber /= 10;
        decimalNumber += rem * pow(8, i);
        ++i;
    }
    return decimalNumber;
}

OUTPUT : :

/* C++ Program to Convert Octal to Decimal  */

Enter an octal number: 234

 [ 234 ] in octal = [ 156 ] in decimal

Process returned 0

Above is the source code for C++ Program to Convert Octal to Decimal which is successfully compiled and run on Windows System.The Output of the program is shown above .

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