in C language,. int var= 010; printf("%d",var);

Question

How the o/p is getting 8???

Answer 1

It's octal representation of decimal value 8.

this thread discusses the same, just in different language (java)

https://www.sololearn.com/discuss/378895/?ref=app

also read this article
https://www.google.com/amp/s/www.geeksforgeeks.org/octal-numbers-c/amp/

Answer 2

Bhargav Sai ,
Not 100, It's 010.

won't be hard to understand if you care to do some efforts from your side. At least read the article provided.