Can anyone please explain this?

Question

I=10;
printf("%d%d%d",i,i++,i--);
o/p is 10910
why?

Answer 1

the %d is replaced by respective double variable. first one is 10, and so goes on...

Answer 2

This is a classic case of undefined behavior and sequence points in C/C++.

https://gist.github.com/gkastrinis/22c27578cfa093837880

Answer 3

The output will be:
101011
This is because the value of i is incremented after the second parameter i.e., i++, but the decrement occurs after print in case of second parameter i.e., i--.

Answer 4

output is 10910