Reverse a number - Decimal to Octal

harish reddy

8y890Learn iOS Programming

Write a program in C# Sharp to convert a decimal number into octal without using an array.

I have done the proram til here:

int decimalnumber = int.Parse(Console.ReadLine());

int remainder;

for (int i = 0; i < 3; i++)

{

remainder = decimalnumber % 8;

int quotient = decimalnumber / 8;

decimalnumber = quotient;

Console.Write(remainder);

}

when i execute the program and give input as 117 for example, i am getting ouput as 561. However, i should be getting 165. Pls let me know how i can reverse them with out using array.

5 Replies

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Dharmraj Thakur8y ago
Accepted answer
Fine... as your wish....
static void Main(string[] args)
{
    StringBuilder sb = new StringBuilder();
    int decimalnumber = int.Parse(Console.ReadLine());
    int remainder;

    while (decimalnumber != 0)
    {
        remainder = decimalnumber % 8;
        int quotient = decimalnumber / 8;
        decimalnumber = quotient;
        sb.Insert(0, remainder);
    }

    Console.Write(sb.ToString());
    Console.ReadKey();
    Console.ReadKey();
}
harish reddy8y ago
wanted to know how i can continue with the below code:

nt decimalnumber = int.Parse(Console.ReadLine());
int remainder;
for (int i = 0; i < 3; i++)
{
remainder = decimalnumber % 8;
int quotient = decimalnumber / 8;
decimalnumber = quotient;
Console.Write(remainder);
}

Pls suggest. The above code is giving me reverrse order. how can i get it correct.
Dharmraj Thakur8y ago
Try this...
static void Main(string[] args)
{
    int decimalnumber = int.Parse(Console.ReadLine());
    StringBuilder sb = new StringBuilder();

    while (decimalnumber!=0)
    {
        sb.Insert(0, decimalnumber % 8);
        decimalnumber /= 8;
    }

    Console.Write(sb.ToString());
    Console.ReadKey();
}
harish reddy8y ago
I wanted to know how i can continue with the below code:

nt decimalnumber = int.Parse(Console.ReadLine());
int remainder;
for (int i = 0; i < 3; i++)
{
remainder = decimalnumber % 8;
int quotient = decimalnumber / 8;
decimalnumber = quotient;
Console.Write(remainder);
}

Pls suggest. The above code is giving me reverse order. how can I get it correct?
Sagar Pandurang Kap8y ago
Hi,

Try this :-
using System;
class program
{
    public static void Main()
    {
        int decimalNumber, quotient, i = 1, j;
        int[] octalNumber = new int[100];
        Console.WriteLine("Enter a Decimal Number :");
        decimalNumber = int.Parse(Console.ReadLine());
        quotient = decimalNumber;
        while (quotient != 0)
        {
            octalNumber[i++] = quotient % 8;
            quotient = quotient / 8;
        }
        Console.Write("Equivalent Octal Number is ");
        for (j = i - 1; j > 0; j--)
            Console.Write(octalNumber[j]);
        Console.Read();
    }
}
Hope it helps.