The code was supposed to print the numbers from 0 to 10. Why the output is reversed?

Question

https://code.sololearn.com/cLwjf15Wjg89/?ref=app

Answer 1

Modifying data and using it again between two sequence points leads to *undefined behaviour*, a topic every C writer has to accustom themselves with.

https://en.m.wikipedia.org/wiki/Undefined_behavior

Answer 2

Iterations are tricky constructs.