﻿ C# - Convert an octal number into binary

# C#: Convert an octal number into binary

## C# Sharp For Loop: Exercise-54 with Solution

Write a program in C# Sharp to convert an octal number into binary.

Sample Solution:-

C# Sharp Code:

``````using System;  // Importing necessary namespace

public class Exercise54  // Declaration of the Exercise54 class
{
public static void Main()  // Main method, entry point of the program
{
int n1, n5, p = 1;  // Declaration of variables
int dec = 0, i = 1, j, d;
int binno = 0;

Console.Write("\n\n");
Console.Write("Convert Octal to Binary:\n");
Console.Write("--------------------------");
Console.Write("\n\n");

Console.Write("Input an octal number (using digit 0 - 7) :");
n1 = Convert.ToInt32(Console.ReadLine());  // Taking user input for an octal number
n5 = n1;  // Storing the original octal number for display at the end

// Converting the octal number to its decimal equivalent
for (j = n1; j > 0; j = j / 10)
{
d = j % 10;
if (i == 1)
p = p * 1;
else
p = p * 8;

dec = dec + (d * p);
i++;
}

/* Converting the obtained decimal equivalent to its binary representation */
i = 1;
for (j = dec; j > 0; j = j / 2)
{
binno = binno + (dec % 2) * i;
i = i * 10;
dec = dec / 2;
}

// Displaying the original octal number and its equivalent binary number
Console.Write("\nThe Octal Number : {0}\nThe equivalent Binary  Number : {1} \n\n", n5, binno);
}
}
```
```

Sample Output:

```Convert Octal to Binary:
--------------------------
Input an octal number (using digit 0 - 7) :45
The Octal Number : 45
The equivalent Binary  Number : 100101
```

Flowchart:

C# Sharp Code Editor:

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