Why my code couldn't be solved, although string.h, using strrev function?

Question

It does not want to accept strrev() function in printf statement.
https://code.sololearn.com/cSN1Cm2428to/?ref=app

Answer 1

Thanks,Bob_Li

Answer 2

google strrev().

Functions strrev() including some other string functions such as like strupr(), strlwr(), strrev(), which are only available in ANSI C (Turbo C/C++) and are not available in the standard C-GCC compiler. It's not about the system. It is about the C compiler you are using.

Answer 3

Egor Tonchev(EGO)
Here is an alternative:

https://code.sololearn.com/cUhhbUQtI3Ss/?ref=app