# Ruby program to convert the decimal number to binary using recursion

Ruby Example: Write a program to convert the decimal number to binary using recursion.
Submitted by Nidhi, on December 27, 2021

Problem Solution:

In this program, we will read an integer number from the user and get the equivalent binary number using recursion.

Program/Source Code:

The source code to convert the decimal number to binary using recursion is given below. The given program is compiled and executed successfully.

```# Ruby program to convert the decimal number
# to binary using recursion

def dec2bin(num)
if num == 0
return 0;
else
return num % 2 + 10 * dec2bin(num / 2);
end
end

print "Enter number: ";
number = gets.chomp.to_i;

result = dec2bin(number);

print "Binary equivalent is: ",result;
```

Output:

```Enter number: 8
Binary equivalent is: 1000
```

Explanation:

In the above program, we read an integer number from the user. Then we converted the given decimal number to the binary using recursive function dec2bin(). Then we printed the result.

Preparation

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