int in_stock = 20; if (in_stock) printf("Order received.\n");

Question

Inside if in_stock condition please explain what does it mean

Answer 1

No negative is also true. Only 0 is false.

https://code.sololearn.com/cUR79lDa5t2O/?ref=app

You can test in Code Playground. 😉

Answer 2

0 is false
20 is true

Answer 3

It means greater than zero is true and 0 is false