CODEWITHSUNDEEP
rubytypes
Gagan
Gagan

Reputation: 4378

ruby basic data type conversion

I got some weired problem while converting data type in ruby.

Here are some of the outputs that i got in console

0123 and enter gave me output 83
12345600.to_s   #=> "12345600"

but

012345600.to_s gave me #=> "2739072" but i expect "012345600"

Seems like when there is 0 at the beginning of number the output is not as expected.

Can any one explain why this is happening? or provide me a solution so that i can get my expected output.

Thanks

Upvotes: 2

Views: 1353

Answers (4)

Andrew Grimm
Andrew Grimm

Reputation: 81480

"Numbers" like a phone number 02555555555 aren't numbers at all. They're merely strings that only contain digits in them.

Upvotes: 0

fl00r
fl00r

Reputation: 83680

You can't return zero, but you can do this.

0123.to_s(8)
#=> "123"

Actually I am interested in how did you get such numbers like 0123?

Upvotes: 0

Chris Cherry
Chris Cherry

Reputation: 28554

Starting a number with a zero in Ruby is telling the parser that you are going to write the number in octal notation. Heres another SO with some info:

How do I convert an octal number to decimal in Ruby?

Upvotes: 2

Dominik Grabiec
Dominik Grabiec

Reputation: 10655

Having a 0 at the start of a number makes the interpreter/compiler interpret the following digits as an octal number sequence (base 8) not a decimal number sequence (base 10). Therefore the number you entered is an octal number and not decimal.

You can test this on a scientific calculator by putting it into octal mode and then switching to decimal.

Upvotes: 5

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