What should be the output of the program and why??

Question

According to me hello should print but output is world.
https://code.sololearn.com/ckK1ZJp41hjL/?ref=app

Answer 1

C does implicit type casting in this case. Since you can't compare between unsigned and signed integers directly C must to decide which one to use. If it decides to use unsigned values the -23 is seen to a much larger positive value because unsigned values can't be negative and are interpreted differently.
To avoid such weird behaviour you should only compare the same data types.

Answer 2

line no 4.
->signed int i=23;
not->unsigned int i=23;